fx-85W
fx-85WA
fx-300W
fx-350TL
User’s Guide
Guía del usuario
Mode d’emploi
Bedienungsanleitung
Guida dell’utilizzatore
E S F G I
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Safety Precautions
Be sure to read the following safety precautions before
using this calculator. Keep this manual handy for later ref-
erence.
Caution
This symbol is used to indicate information that can
result in personal injury or material damage if ignored.
Batteries
• After removing the batteries from the calculator, put
them in a safe place where there is no danger of
them getting into the hands of small children and
accidently swallowed.
• Keep batteries out of the reach of small children. If
accidently swallowed, consult with a physician im-
mediately.
• Never charge batteries, try to take batteries apart, or
allow batteries to become shorted.Never expose bat-
teries to direct heat or dispose of them by incinera-
tion.
• Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of fire and personal injury.
• Always make sure that a battery’s positive k and
negative l sides are facing correctly when you
load it into the calculator.
• Remove the batteries if you do not plan to use the
calculator for a long time.
• Use only the type of batteries specified for this cal-
culator in this manual.
Disposing of the Calculator
• Never dispose of the calculator by burning it. Doing
so can cause certain components to suddenly burst,
creating the danger of fire and personal injury.
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• The displays and illustrations (such as key markings)
shown in this User’s Guide are for illustrative pur-
poses only, and may differ somewhat from the actual
items they represent.
• The contents of this manual are subject to change
without notice.
• In no event shall CASIO Computer Co., Ltd.be liable
to anyone for special, collateral, incidental, or con-
sequential damages in connection with or arising out
of the purchase or use of these materials. Moreover,
CASIO Computer Co., Ltd. shall not be liable for any
claim of any kind whatsoever against the use of these
materials by any other party.
Handling Precautions
• Be sure to press the P button on the back of the cal-
culator (step 6 on page 29) before using it for the
first time (fx-350TL).
• Be sure to press the 5 key before using the calcu-
lator for the first time (fx-85W/fx-85WA/fx-300W).
• Even if the calculator is operating normally, replace
the battery at least once every three years.
Dead battery can leak, causing damage to and malfunc-
tion of the calculator. Never leave the dead battery in the
calculator.
• The battery that comes with the calculator when you
purchase it is for testing only. It may not provide full
service life.
• Low battery power can cause memory contents to
become corrupted or lost completely. Always keep
written records of all important data.
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• Avoid use and storage in areas subjected to tempera-
ture extremes.
Very low temperatures can cause slow display response,
total failure of the display, and shortening of battery life.
Also avoid leaving the calculator in direct sunlight, near
a window, near a heater or anywhere else it might be-
come exposed to very high temperatures.Heat can cause
discoloration or deformation of the calculator’s case, and
damage to internal circuitry.
• Avoid use and storage in areas subjected to large
amounts of humidity and dust.
Take care never to leave the calculator where it might be
splashed by water or exposed to large amounts of hu-
midity or dust. Such elements can damage internal cir-
cuitry.
• Never drop the calculator or otherwise subject it to
strong impact.
• Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trou-
sers or other tight-fitting clothing where it might be sub-
jected to twisting or bending.
• Never try to take the calculator apart.
• Never press the keys of the calculator with a ball-point
pen or other pointed object.
• Use a soft, dry cloth to clean the exterior of the unit.
If the calculator becomes very dirty, wipe it off with a
cloth moistened in a weak solution of water and a mild
neutral household detergent. Wring out all excess mois-
ture before wiping the calculator.Never use thinner, ben-
zine or other volatile agents to clean the calculator. Do-
ing so can remove printed markings and damage the
case.
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Contents
Safety Precautions .......................................... 1
Handling Precautions....................................... 2
Two-line Display ............................................... 5
Key Layout ........................................................ 6
Before Starting Calculations... ....................... 8
kModes .................................................................... 8
kInput Capacity ........................................................ 9
kMaking Corrections During Input ........................... 9
kReplay Function ..................................................... 9
kError Locator .......................................................... 9
kExponential Display Formats ............................... 10
kAnswer Memory ................................................... 10
Basic Calculations ......................................... 11
Memory Calculations ..................................... 11
kIndependent Memory ........................................... 11
kVariables .............................................................. 11
Fraction Calculations ..................................... 12
kFraction Calculations ........................................... 12
kDecimal-to-Fraction Conversion........................... 12
kFraction-to-Decimal Conversion........................... 12
Percentage Calculations ................................ 13
Scientific Function Calculations ................... 14
kTrigonometric/Inverse Trigonometric Functions.... 14
kHyperbolic/Inverse Hyperbolic Functions ............. 15
kAngle Unit Conversion ......................................... 15
kCommon and Natural Logarithms/
Antilogarithms ...................................................... 15
kSquare Roots, Cube Roots, Roots, Squares,
Cubes, Reciprocals, Factorials,
Random Numbers and π .......................................... 16
kFIX, SCI, RND ..................................................... 16
kENG Calculations ................................................ 17
kCoordinate Conversion (Pol(x, y), Rec (r, θ)) ............ 18
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kPermutation.......................................................... 18
kCombination ......................................................... 18
Statistical Calculations ..................................19
kStandard Deviation (SD Mode) ............................ 19
kRegression Calculations (REG Mode) ................. 20
Formula Memory (fx-85W) .............................23
Base-n Calculations (fx-85W) ....................... 23
Degrees, Minutes, Seconds Calculations .... 25
Technical Information..................................... 25
kWhen you have a problem...... ............................. 25
kError Messages ................................................... 26
kOrder of Operations ............................................. 27
kStacks .................................................................. 27
kPower Supply ....................................................... 28
kInput Ranges ....................................................... 30
Specifications ................................................ 32
Two-line Display
You can simultaneously check the calculation
formula and its answer.
The first line displays the calculation formula.
The second line displays the answer.
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Key Layout
<
fx-350TL
>
RE9PLAY
Page
12
ALPHA
SHIFT
MODE
OFF
Page
16
18
18
16
x!
Rec(
Page
Page
16
18
12
18
16
16
16
15
15
15
10
e
Page
Page
17
12
16
11
15
15
11 25 11
11 14 11 14 11
A
B
C
sin-1
D
cos-1
E
tan-1
F
Page
Page
11
25
11
15
14
14
20
11 20 11 11 11
r
M-
X
Y
M
19 DT CL 20
11
Page
Page
11
11
11
20
20
20
9
11 19
A
B
C
INS
McI ScI
Page
Page
9
20
20
19
16
20
19
y
Page
19
20
20
y
Page
Page
17
16
11
15
13
Rnd
Ran#
DRG
10
fx-85WA/fx-300W:
2
McI ScI
McI ScI
OFF
ON
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Key Layout
<fx-85W>
RE9PLAY
Page
12
ALPHA
2
ON
SHIFT
MODE
Page
23
16 24
18
16
Rec(
x! LOGIC
Page
Page
23
16
12
18
16
16
15
24
15 24 15 24
DEC
HEX
BIN OCT
10
e
Page
Page
17
12
16
11
16
15
15
11 25 11
11 14 11 14 11
A
B
C
sin-1
D
cos-1
E
tan-1
F
Page
Page
11
25
11
15
14
14
20
11 20 11 11 11
r
M-
X
Y
M
19 DT CL 20
11
Page
Page
11
11
11
20
20
20
9
11 19
A
B
C
INS
McI ScI
Page
Page
9
20
20
19
16
20
19
18
18
y
nPr
nCr
Page
19
20
20
y
Page
Page
17
16
11
15
13
Rnd
Ran#
DRG
10
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Before Starting Calculations...
k Modes
Mode
Name
Mode
Application
Indicator
Calculation Modes
Normal calculations
COMP
SD
–
Standard deviation
calculations
SD
Regression calculations
REG
REG
Base-n calculations
(fx-85W only)
BASE-N b (binary)
o (octal)
d (decimal)
H (hexadecimal)
Angle Unit Modes
Degrees
DEG
RAD
GRA
R
Radians
T
B
Grads
Display Modes
Exponential notation
(Canceling FIX and SCI
specification)
NORM1
NORM2
–
–
Number of decimal
place specification
FIX
SCI
Fix
Sci
Number of significant
digit specification
Note!
• Mode indicators appear in the lower part of the display,
except for the Base-n indicators which appear in the ex-
ponent part of the display.
• You cannot set the angle unit or the display mode while
the calculator is in the BASE-N mode (fx-85W).
• The COMP, SD, and REG modes can be used in combi-
nation with the angle unit modes.
• Be sure to check the current calculation mode (SD, REG,
COMP) and angle unit mode (DEG, RAD, GRA) before
beginning a calculation.
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k Input Capacity
• The memory area used for calculation input can hold 79
“steps.” Whenever you input the 73rd step of any calcu-
lation, the cursor changes from “_”to “k” to let you know
memory is running low. If you still need to input more,
you should divide your calculation into two or more parts.
k Making Corrections During Input
• Use e and r to move the cursor to the location you
want.
• Press [ to delete the number or function at the current
cursor position.
• Press A K to change to an insert cursor t. Inputting
something while the insert cursor is on the display in-
serts the input at the insert cursor position.
• Press e, r, A K, or = returns to the normal cur-
sor from the insert cursor.
k Replay Function
• Pressing r or e recalls the last calculation you per-
formed.You can then make any changes you want in the
calculation and re-execute it.
• Pressing t does not clear Replay memory, so you can
recall the last calculation even after you press t.
• Replay memory is cleared whenever you start a new
calculation, change to another mode, or turn off power.
k Error Locator
• Pressing r or e after an error occurs displays the
calculation with the cursor positioned at the location
where the error occurred.
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k Exponential Display Formats
This calculator can display up to 10 digits. Larger values
are automatically displayed using exponential notation. In
the case of decimal values, you can select between two
formats that determine at what point exponential notation
(
)
is used. Press F F F F 3 1 or 2 to select
NORM 1 or NORM 2 (fx-85W). For other models, press
(
)
F F F 3 1 or 2 .
• NORM 1
With NORM 1, exponential notation is automatically used
for integer values with more than 10 digits and decimal
values with more than two decimal places.
• NORM 2
With NORM 2, exponential notation is automatically used
for integer values with more than 10 digits and decimal
values with more than nine decimal places.
• All of the examples in this manual show calculation re-
sults using the NORM 1 format.
k Answer Memory
• Whenever you press = after inputting values or an ex-
pression, the calculated result is automatically stored in
Answer Memory. You can recall Answer Memory con-
tents by pressing g.
• Answer Memory can store up to 12 digits for the mantissa
and two digits for the exponent.
• Answer Memory contents are not changed if the opera-
tion performed by any of the above key operations re-
sults in an error.
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Basic Calculations
• Use the COMP mode for basic calculations.
• Example 1: 3҂(5҂10–9)
1.5-08
80.00
3 - R 5 e D 9 T =
• Example 2: 5҂(9ѿ7)
5 - R 9 + 7 T =
• You can skip all T operations before =.
Memory Calculations
k Independent Memory
• Values can be input directly into memory, added to
memory, or subtracted from memory. Independent
memory is convenient for calculating cumulative totals.
• Independent memory uses the same memory area as
variable M.
• To clear independent memory (M), input 0 j 3.
• Example:
32.00
23 ѿ 9 ҃ 32 23 + 9 j 3
53 Ҁ 6 ҃ 47
Ҁ) 45 ҂ 2 ҃ 90
53 , 6 |
47.00
90.00
(Total) –11 45 - 2 A {
0 3
–11.00
k Variables
• There are nine variables (A through F, M, X andY), which
can be used to store data, constants, results, and other
values.
• Use the following operation to delete data assigned to
all nine variables: A C =.
• Use the following operation to delete data assigned to a
particular variable: 0 j 1. This operation deletes
the data assigned to variable A.
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• Example: 193.2 Ö 23 ҃ 8.4
193.2 Ö 28 ҃ 6.9
193.2 j 1 \ 23 =
8.400
6.900
p 1 \ 28 =
Fraction Calculations
k Fraction Calculations
• Use the COMP mode for fraction calculations.
• Values are automatically displayed in decimal format
whenever the total number of digits of a fractional value
(integer ѿ numeratorѿ denominator ѿ separator marks)
exceeds 10.
2
3
4
5
• Example 1:
ѿ 1
2 C 3 + 1 C 4 C 5 =
2 7 15.00
1
2
• Example 2:
ѿ1.6
1 C 2 + 1.6 =
2.100
• Fraction/decimal calculation results are always decimal.
k Decimal-to-Fraction Conversion
3
4
• Example: 2.75 → 2
2.75 =
2.75
2 3 4.00
C
A B
11 4.00
k Fraction-to-Decimal Conversion
1
2
• Example:
↔ 0.5 (Fraction ↔Decimal)
1 2.00
1 C 2 =
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0.500
C
C
1 2.00
Percentage Calculations
• Use the COMP mode for percentage calculations.
• Example 1: To calculate 12% of 1500
1500 - 12 A v
180.00
• Example 2: To calculate what percentage of 880 is 660
660 \ 880 A v
75.00
• Example 3: To add 15% onto 2500
2500 - 15 A v +
2875.00
• Example 4: To discount 3500 by 25%
3500 - 25 A v ,
2625.00
• Example 5: If 300 grams are added to a test sample
originally weighing 500 grams, what is the percentage
increase in weight?
300 ѿ 500
҂ 100 ҃ 160 (%)
500
160.00
300 + 500 A v
• Example 6: If temperature changes from 40°C to 46°C,
what percentage did it rise?
46 Ҁ 40
҂ 100 ҃ 15 (%)
40
46 , 40 A v
15.00
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Scientific Function Calculations
• Use the COMP mode for scientific function calculations.
• ꢀ = 3.14159265359
k Trigonometric/InverseTrigonometric
Functions
• Example 1: sin63°52o41ǥ
fx-85W:
Other models:
q q q 1
q q 1
→“
”
R
0.89785901200
S 63 I 52 I 41 I =
R
π
• Example 2: cos
(
rad)
q q q 2
q q 2
3
fx-85W:
Other models:
→“
”
T
0.500
W R A x \ 3 T =
T
2
π
• Example 3: cosҀ1
fx-85W:
҃
rad
2 4
q q q 2
→“
”
T
Other models:
q q 2
0.78539816300
A V R L 2 \ 2 T =
g \ A x =
T
0.2500
• Example 4: tanҀ10.741
fx-85W:
Other models:
q q q 1
q q 1
→“
”
R
36.5384457700
A g 0.741 =
R
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k Hyperbolic/Inverse Hyperbolic
Functions
• Example 1: sinh 3.6
18.2854553600
M S 3.6 =
• Example 2: sinhҀ1 30
M A j 30 =
4.09462222400
k Angle Unit Conversion
• Press A v to display the following menu.
D
R
G
1 2 3
• Pressing 1, 2, or 3 converts the displayed value to
the corresponding angle unit.
• Example : To convert 4.25 radians to degrees
fx-85W:
Other models:
q q q 1
q q 1
→“
”
R
r
4.25
(
)
4.25 A v 2 R =
243.5070629
k Common and Natural Logarithms/
Antilogarithms
0.08990511100
• Example 1: log 1.23 R 1.23 =
• Example 2: In 90 (҃log 90)
e
4.4998096700
22026.4657900
31.622776600
16.00
T 90 =
• Example 3: e10
• Example 4: 101.5
• Example 5: 24
A U 10 =
A Q 1.5 =
2 w 4 =
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k Square Roots, Cube Roots, Roots,
Squares, Cubes, Reciprocals,
Factorials, Random Numbers and π
• Example 1: 2ѿ 3҂
5
5.28719690900
–1.29002405300
1.98864779500
L 2 + L 3 - L 5 =
• Example 2: 3 5ѿ 3 ꢀ27
D 5 + D D 27 =
1
• Example 3: 7 123 ( = 1237 )
7 A H 123 =
• Example 4: 123ѿ302
123 + 30 K =
12 N =
1023.00
1728.00
• Example 5: 123
1
• Example 6:
1
3
1
4
ꢀ
3
4
a , a T a =
12.00
R
• Example 7: 8!
8 A f =
40320.00
• Example 8: To generate a random number between
0.000 and 0.999
0.66400
A M =
Example (results differ each time)
9.42477796100
• Example 9: 3π
3 A x =
k FIX, SCI, RND
• Example 1: 200Ö7҂14҃400
400.00
200 \ 7 - 14 =
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(Specifies three decimal places.)
400.00000
fx-85W: F F F F 1 3
Other models: q q q 1 3
Fix
28.57100
(Calculation continues using 10
display digits)
200 \ 7 =
- 14 =
400.00000
Performing the same calculation using the specified
number of decimal places
200 \ 7 =
A Q
28.57100
28.57100
(Internal rounding)
399.99400
- 14 =
• Press F F F F 3 1 (fx-85W) to clear FIX speci-
fication. For other models, press F F F 3 1.
• Example 2: 1Ö 3, displaying result with two significant
digits (SCI 2)
fx-85W:
Other models:
q q q q 2 2
q q q 2 2
3.3–01
1 \ 3 =
Sci
• Press F F F F 3 1 (fx-85W) to clear SCI speci-
fication. For other models, press F F F 3 1.
k ENG Calculations
• Example 1: To convert 56,088 meters to kilometers
56.088003
56088 = J
• Example 2: To convert 0.08125 grams to milligrams
81.25–03
0.08125 = J
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k
Coordinate Conversion (Pol(x, y), Rec (r, θ))
• Calculation results are automatically assigned to vari-
ables E and F.
• Example 1: To convert polar coordinates (r҃2, ҃60°)
to rectangular coordinates (x, y) (DEG mode)
1.00
x
y
A F 2 P 60 T =
0 o
R
1.73205080800
• 0 n, 0 o swaps displayed value with value in
memory.
• Example 2: To convert rectangular coordinates (1, 3)
to polar coordinates (r, ) (RAD mode)
2.00
r
f 1 P L 3 T =
0 o
T
1.04719755100
θ
• 0 n, 0 o swaps displayed value with value in
memory.
k Permutation
• Example: To determine how many different 4-digit val-
ues can be produced using the numbers 1 through 7
• Numbers cannot be duplicated within the same 4-digit
value (1234 is allowed, but 1123 is not).
7 A m 4 =
840.
k Combination
• Example: To determine how many different 4-member
groups can be organized in a group of 10 individuals
10 n 4 =
210.
(fx-85W: A n)
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Statistical Calculations
k Standard Deviation (SD Mode)
• Press F F 1 (fx-85W) to enter the SD Mode for sta-
tistical calculations using standard deviation. For other
models, press F 2.
• Data input always starts with A m = to clear statisti-
cal memory.
0 1 Σx2
0 2 Σx
• Input data is used to calculate values for
n, Σx, Σx2, o, σn and σn-1 which you can
recall using the key operations noted
nearby.
0 k
A M
n
o
A A σn
A N σn-1
• Example: To calculate σnҀ1, σn, o, n, Σx, and Σx2 for the
following data : 55, 54, 51, 55, 53, 53, 54, 52
Enter SD Mode
fx-85W: F F 1
Other models: F 2
A m = (Memory Clear)
55 S 54 S 51 S 55 S
52.00
53 S S 54 S 52 S
SD
1.40788595300
(Sample Standard Deviation σnҀ1) A N =
1.31695671900
(Population Standard Deviation σn) A A =
53.37500
8.00
(Arithmetic Mean o)
(Number of Data n)
(Sum of Values Σx)
A M =
0 k
427.00
0 H
(Sum of Squares of Values Σx 2
)
0 G
22805.00
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Data Input Precautions
• S S inputs the same data twice.
• You can also input multiple entries of the same data us-
ing A G. To input the data 110 ten times, for example,
press 110 A G 10 S.
• The above results can be obtained in any order, and not
necessarily that shown above.
• To delete data you have just input, press A U.
k Regression Calculations (REG Mode)
• Press F F 2 (fx-85W) to enter the REG mode and
then select one of the following regression types. For
other models, press F 3.
1: Linear regression
2: Logarithmic regression
3: Exponential regression
r 1: Power regression
r 2: Inverse regression
r 3: Quadratic regression
• Data input always starts with A m = to clear statisti-
cal memory.
• The values produced by a regression calculation depend
on the values input, and results can be recalled using
the key operations shown in the table below.
0 G Σx2 A N
0 H Σx A l
xσn-1
p
yσn
yσn-1
0 k
0 h Σy2 A c
n
A d
0 n Σy A q Regression coefficient A
0 o Σxy A w Regression coefficient B
0 M Σx3 A e Regression coefficient C
0 x Σx2y A u Correlation coefficient r
0 y Σx4 A O
m
n
A M
o
A b
xσn
A A
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• Linear Regression
The regression formula for linear regression is:y ҃ A ѿ Bx.
• Example: Atmospheric Pressure vs.Temperature
Perform linear regression to deter-
mine the regression formula terms
Atmospheric
Temperature
Pressure
10°C
15°C
20°C
25°C
30°C
1003 hPa
1005 hPa
1010 hPa
1011 hPa
1014 hPa
and correlation coefficient for the
data nearby.Next, use the regres-
sion formula to estimate atmos-
pheric pressure at 18°C and tem-
perature at 1000 hPa.
Enter REG Mode (Linear Regression)
fx-85W: q q 2 1
Other models: q 3 1
A m = (Memory Clear)
10 P1003 S 15 P1005 S
20 P1010 S 25 P1011 S
30 P1014 S
30.00
REG
997.400
0.5600
(Regression Coefficient A)
(Regression Coefficient B)
(Correlation Coefficient r)
(Atmospheric Pressure at 18°C)
(Temperature at 1000 hPa)
A q =
A w =
A J =
18 A b
0.98260736800
1007.4800
4.64285714300
1000 A O
• Quadratic Regression
• The regression formula for quadratic regression is:
y = A + Bx +Cx2.
• Input data using the following key sequence.
<x-data> P <y-data> S
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• Example:
Perform quadratic regression to de-
termine the regression formula terms
and correlation coefficient for the data
nearby. Next, use the regression for-
mula to estimate the values for ˆy (es-
timated value of y) for xi = 16 and ˆx
(estimated value of x) for yi = 20.
xi
29
yi
1.6
50
74
23.5
38.0
46.4
48.0
103
118
Enter REG mode (Quadratic regression)
fx-85W: F F 2 r 3
Other models: q 3 r 3
A m =
29 P 1.6 S 50 P 23.5 S
74 P 38.0 S103 P 46.4 S
118 P 48.0 S
118.
REG
(Regression Coefficient A)
(Regression Coefficient B)
(Regression Coefficient C)
(ˆy when xi = 16)
A q =
-
35.59856934
A w = 1.495939413
-
-
6.71629667 03
A e =
16 A b
20 A O
A O
-
13.38291067
47.14556728
175.5872105
(ˆx1 when yi = 20)
(ˆx2 when yi = 20)
Data Input Precautions
• S S inputs the same data twice.
• You can also input multiple entries of the same data us-
ing A G. To input the data “20 and 30” five times, for
example, press 20 P 30 A G 5 S.
• The above results can be obtained in any order, and not
necessarily that shown above.
• To delete data you have just input, press A U.
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Formula Memory (fx-85W)
• Formula memory lets you input a single formula in
memory, and then input values for the formula's variables
to calculate results.
• Memory can hold a single formula, up to 79 steps long.
This function can be used in the COMP mode only.
• Note that the formula is actually stored in memory when
you press the
key in the sequence below.
C
• Example: To save the following formula, recall it, and
then use it to calculate a result: Y = X2 + 3X – 12
Input the formula.
Y=X2 +3X 12
p yp u px K+
3 p x , 12
0.
X?
Store it in memory.
C
0.
Input a value for its variable. 7 =
58.
X?
=
7.
8 =
76.
• Formula memory is cleared whenever you start a new
calculation, change to another mode, or turn off power.
Base-n Calculations (fx-85W)
• In addition to decimal values, calculations can be per-
formed using binary, octal and hexadecimal values.
• You can specify the default number system to be ap-
plied to all input and displayed values, and the number
system for individual values you input.
• You cannot use scientific functions in binary, octal, deci-
mal, and hexadecimal calculations.You cannot input val-
ues that include decimal part and an exponent.
• If you input a value that includes a decimal part, the unit
automatically cuts off the decimal part.
• Negative binary, octal, and hexadecimal values are pro-
duced by taking the two's complement.
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• You can use the following logical operators between
values in Base-n calculations: and (logical product), or
(logical sum), xor (exclusive logical sum), xnor (exclu-
sive logical sum negation), Not (negation), and Neg
(minus).
• The following are the allowable ranges for each of the
available number systems.
Binary
1000000000 Ϲ x Ϲ 1111111111
0 Ϲ x Ϲ 0111111111
Octal
4000000000 Ϲ x Ϲ 7777777777
0 Ϲ x Ϲ 3777777777
Decimal
Hexadecimal
–2147483648 Ϲ x Ϲ 2147483647
80000000 Ϲ x Ϲ FFFFFFFF
0 Ϲ x Ϲ 7FFFFFFF
• Example 1: To perform the following calculation and
produce a binary result:
101112 + 110102
Binary mode
b
F 2 b
101112 + 110102
=
0.
0.
b
b
110001.
• Example 2: To perform the following calculation and
produce an octal result:
76548 ÷ 1210
Octal mode
o
F 2 o
0.
( )
o
l l l 4
76548 \
o
o
l l l 1(d)1210
0.
=
516.
• Example 3: To perform the following calculation and
produce a hexadecimal result:
12016 or 11012
Hexadecimal mode
H
F 2 h
0.
12016 l 2(or)
H
H
(b)
l l l 3 11012
0.
=
12d.
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Degrees, Minutes, Seconds
Calculations
• You can perform sexagesimal calculations using degrees
(hours), minutes, and seconds, and convert between
sexagesimal and decimal values.
• Example 1: To convert the decimal value 2.258 to a
sexagesimal value
2.258 =
A O
2.258
2°15°28.8
• Example 2: To perform the following calculation:
12°34’56” ҂ 3.45
12 I 34 I 56 I - 3.45
0.
43°24°31.2
=
Technical Information
k When you have a problem......
If calculation results are not what you expect or if an error
occurs, perform the following steps.
1. F 1 (COMP mode)
2. fx-85W:
Other models:
3. fx-85W:
Other models:
F F F 1
(DEG mode)
q q 1
F F F F 3 1
(NORM 1 mode)
F F F 3 1
4. Check the formula you are working with to confirm it is
correct.
5. Enter the correct modes to perform the calculation and
try again.
<fx-350TL>
If the above steps do not correct your problem, press the
P button (see page 29) on the back of the calculator to
reset it. Pressing the P button deletes all data stored in
calculator memory. Make sure you always keep written
copies of all important data.
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<fx-85W/fx-85WA/fx-300W>
If the above steps do not correct the problem, press the
5 key. The calculator performs a self-check operation and
deletes all data stored in memory if any abnormality is
detected. Make sure you always keep written copies of all
important data.
k Error Messages
The calculator is locked up while an error message is on
the display. Press t to clear the error, or press e or r
to display the calculation and correct the problem. See
“Error Locator” on page 9 for details.
Ma ERROR
• Cause
• Calculation result is outside the allowable calculation
range.
• Attempt to perform a function calculation using a value
that exceeds the allowable input range.
• Attempt to perform an illogical operation (division by
zero, etc.).
• Action
• Check your input values and make sure they are all
within the allowable ranges. Pay special attention to
values in any memory areas you are using.
Stk ERROR
• Cause
• Capacity of the numeric stack or operator stack is ex-
ceeded.
• Action
• Simplify the calculation. The numeric stack has 10
levels and the operator stack has 24 levels.
• Divide your calculation into two or more separate parts.
Syn ERROR
• Cause
• Attempt to perform an illegal mathematical operation.
• Action
• Press e or r to display the calculation with the
cursor located at the location of the error. Make nec-
essary corrections.
E-26
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Arg ERROR
• Cause
• Improper use of argument
• Action
• Press e or r to display the location of the cause of
the error and make required corrections.
k Order of Operations
Calculations are performed in the following order of prec-
edence.
1 Coordinate transformation: Pol (x, y), Rec (r, θ)
2 Type A functions:
With these functions, the value is entered and then the
function key is pressed.
x2, xҀ1, x!,
° ’ ”
3 Powers and roots: xy, x
4 ab/c
5 Abbreviated multiplication format in front of π, memory
name, or variable name: 2π, 5A, πA etc.
6 Type B functions:
With these functions, the function key is pressed and
then the value is entered.
3
,
, log, In, ex, 10x, sin, cos, tan, sinҀ1, cosҀ1
,
tanҀ1, sinh, cosh, tanh, sinhҀ1, coshҀ1, tanhҀ1, (Ҁ)
7 Abbreviated multiplication format in front of Type B
functions: 2 3, Alog2 etc.
8 Permutation and combination: nPr, nCr
9 ҂, Ö
0 ѿ, Ҁ
* Operations of the same precedence are performed from
right to left. exIn
120 → ex{In(
120)}
Other operations are performed from left to right.
* Operations enclosed in parentheses are performed first.
k Stacks
This calculator uses memory areas, called“stacks,”to tem-
porarily store values (numeric stack) and commands (com-
mand stack) according to their precedence during calcu-
lations.The numeric stack has 10 levels and the command
stack has 24 levels. A stack error (Stk ERROR) occurs
whenever you try to perform a calculation that is so com-
plex that the capacity of a stack is exceeded.
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k Power Supply
The type of battery you should use depends on the model
number of your calculator.
<fx-85W/fx-85WA/fx-300W>
The TWO WAY POWER system actually has two power
supplies: a solar cell and a G13 Type (LR44) button bat-
tery. Normally, calculators equipped with a solar cell alone
can operate only when relatively bright light is present.
The TWO WAY POWER system, however, lets you con-
tinue to use the calculator as long as there is enough light
to read the display.
• Replacing the Battery
Either of the following symptoms indicates battery power
is low, and that the battery should be replaced.
• Display figures are dim and difficult to read in areas
where there is little light available.
• Nothing appears on the display when you press the
5 key.
• To replace the battery
1 Remove the six screws that
hold the back cover in place
and then remove the back
cover.
Screw
Screw
2 Remove the old battery.
3 Wipe off the sides of new bat-
tery with a dry, soft cloth.Load
it into the unit with the posi-
tive
can see it).
side facing up (so you
k
4 Replace the back cover and
secure it in place with the six
screws.
5 Press 5 to turn power on. Be
sure not to skip this step.
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<fx-350TL>
This calculator is powered by single G13 Type (LR44) but-
ton battery.
• Replacing the Battery
Dim figures on the display of the calculator indicate that
battery power is low. Continued use of the calculator
when the battery is low can result in improper operation.
Replace the battery as soon as possible when display
figures become dim.
• To replace the battery
1 Press i to turn power off.
Screw
2 Remove the two screws that hold
the battery cover in place and
then remove the battery cover.
3 Remove the old battery.
4 Wipe off the side of new battery
with a dry, soft cloth. Load it into
the unit with the positive
facing up (so you can see it).
side
k
5 Replace the battery cover and
secure it in place with the two
screws.
6 Use a thin, pointed object to
press the P button. Be sure not
to skip this step.
P button
7 Press L to turn power on.
• Auto Power Off
Calculator power automatically turns off if you do not per-
form any operation for about six minutes. When this hap-
pens, press L (fx-85W/fx-85WA/fx-300W: 5 ) to turn
power back on.
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k Input Ranges
Internal digits: 12
Accuracy: As a rule, accuracy is ±1 at the 10th digit.
Functions
Input Range
sinx
DEG 0Ϲ ꢁxꢁ Ϲ4.499999999҂1010
RAD 0Ϲ ꢁxꢁ Ϲ785398163.3
GRA 0Ϲ ꢁxꢁ Ϲ4.499999999҂1010
cosx DEG 0Ϲ ꢁxꢁ Ϲ4.500000008҂1010
RAD 0Ϲ ꢁxꢁ Ϲ785398164.9
GRA 0Ϲ ꢁxꢁ Ϲ5.000000009҂1010
tanx DEG Same as sinx, except when ꢁxꢁ= (2n-1)҂90.
RAD Same as sinx, except when ꢁxꢁ= (2n-1)҂π/2.
GRA Same as sinx, except when ꢁxꢁ= (2n-1)҂100.
sin–1x
0Ϲ ꢁxꢁ Ϲ1
cos–1x
tan–1x 0Ϲ ꢁxꢁ Ϲ9.999999999҂1099
sinhx
coshx
0Ϲ ꢁxꢁ Ϲ230.2585092
sinh–1x
cosh–1x
0Ϲ ꢁxꢁ Ϲ4.999999999҂1099
tanhx
tanh–1x
0Ϲ ꢁxꢁ Ϲ9.999999999҂10-1
log
x
/lnx 0 x
x
10
–9.999999999҂1099Ϲ x Ϲ 99.99999999
–9.999999999҂1099Ϲ x Ϲ 230.2585092
0Ϲ x 1 ҂ 10100
ex
x
x2
ꢁxꢁ 1҂ 1050
1/x
ꢁxꢁ 1҂ 10100
ꢁxꢁ 1҂ 10100
;
x G
0
3
x
x!
0Ϲ x Ϲ 69 (x is an integer)
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Functions
Input Range
0Ϲ n Ϲ99, r Ϲ n (n, r is an integer)
1Ϲ {n!/(n–r)!} Ϲ 9.999999999҂1099
0Ϲ n Ϲ99, r Ϲ n (n, r is an integer)
ꢁxꢁ, ꢁyꢁ Ϲ9.999999999҂1049
(x2+y2) Ϲ9.999999999҂1099
0Ϲ r Ϲ9.999999999҂1099
Rec(r, )
nPr
nCr
Pol(x, y)
θ: Same as sinx, cosx
ꢁaꢁ, b, c 1҂10100
0 Ϲ b, c
ꢁxꢁ1҂10100
°’ ”
Decimal ↔ Sexagesimal Conversions
000000Ϲ ꢁxꢁ Ϲ9999990590
xŒ0: –1҂10100ylogx100
xy
x҃0: yŒ0
x0: y҃n,
However: –1҂10100 ylogꢁxꢁ100
1
(n is an integer)
2n+1
yŒ0: x G 0
–1҂101001/x logy100
x
y
y҃0: xŒ0
1
y0: x҃2nѿ1, (n G 0; n is an integer)
n
However: –1҂10100 1/x logꢁyꢁ100
Total of integer, numerator, and denominator
must be 10 digits or less (including division
marks).
b
a /c
ꢁxꢁ 1҂1050
ꢁyꢁ 1҂1050
ꢁnꢁ 1҂10100
SD
(REG) xn, yn, o, p
A, B, r : n G 0
xn–1,yn–1 : n G 0, 1
* Erros are cumulative with such internal continuous cal-
3
culations as xy, x x , x!, and x , so accuracy may be
adversely affected.
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Specifications
Power Supply:
fx-85W/fx-85WA/fx-300W:
Solar cell and a single G13 Type button bat-
tery (LR44)
fx-350TL: Single G13 Type button battery (LR44)
Battery Life:
fx-85W/fx-85WA/fx-300W:
Approximately 3 years (1 hour use per day).
fx-350TL: Approximately 12,000 hours continuous dis-
play of flashing cursor.
Approximately 3 years when left with power
turned off.
Dimensions:
10(H)i76(W)i150(D) mm
3/8Љ(H)i3Љ(W)i57/8Љ(D)
Weight:
fx-85W/fx-85WA/fx-300W:
80 g (2.8oz) including battery
fx-350TL: 90 g (3.2oz) including battery
Power Consumption: 0.0001W
Operating Temperature: 0°C ~ 40°C (32°F ~ 104°F)
E-32
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CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
London NW2 7JD, U.K.
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CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Shibuya-ku, Tokyo 151-8543, Japan
SA9810-B Printed in China
Imprimé en Chine
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