Casio Fx 82SOLAR_260SOLAR II_260SOLAR II NF 82_260SOLARII 82 260SOLARII EN

User Manual: Casio fx-82_260SOLARII fx-82SOLAR II, fx-260SOLAR II, fx-260SOLAR II NF | Calculators | Manuals | CASIO

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• Example 5: 1

2 ↔ 0.5 (Fraction ↔ Decimal)

1 C 2 =1 2.

C0.5

C1 2.

• Example 6: 1 ↔

1 C 2 C 3 1 2 3.

A B 5 3.

A B1 2 3.

Percentage Calculations

• Use COMP mode for percentage calculations.

• Example 1: To calculate 12% of 1500.

1500 - 12 A v180.

• Example 2: To calculate what percentage of 880 is 660.

660 \ 880 A v75.

• Example 3: To add 15% onto 2500.

2500 - 15 A v +2875.

• Example 4: To discount 3500 by 25%.

3500 - 25 A v ,2625.

• Example 5: To calculate the following using a constant.

12% of 1200 = 144

18% of 1200 = 216

23% of 1200 = 276

(12 %) 1200 - - 12 A vK 144.

(18 %) 18 A vK 216.

(23 %) 23 A vK 276.

• Example 6: 300 grams are added to a test sample

originally weighing 500 grams, producing a final test

sample of 800 grams. What percent of 500 grams is 800

grams?

300 + 500 A v 160.

• Example 7: What is the percentage change when a value

is increased from 40 to 46?

46 , 40 A v 15.

Scientific Function Calculations

• Use COMP mode for scientific function calculations.

• Some calculations may take a long time to complete.

• Wait for result before starting next calculation.

• π = 3.1415926536.

kSexagesimal Functions

• Example 1: 14°25’36” + 12°23’34” = 26°49’10”

14 I 25 I 36 I +

12 I 23 I 34 I =26°49°10.

• Example 2: 1°2’3” + 4.56 = 5.594166667

1 I 2 I 3 I + 4.56 =5.594166667

• Example 3: sin 87°65’43.21” = 0.999447513 (DEG mode)

87 I 65 I 43.21 I S0.999447513

• Example 4: 1.23 ↔ 1°13’48” 1.23 I1°13°48.

I1.23

I1°13°48.

• Example 5: 12°34’ ↔ 12.56666667

12 I 34 I A O12.56666667

You can also use I when inputting values to convert

between sexagesimal and decimal.

k

Trigonometric/Inverse Trigonometric Functions

• Example 1: sin ( π

6rad) (RAD mode)

A x \ 6 = SRAD

0.5

• Example 2: cos 63°52’41” (DEG mode)

63 I 52 I 41 I WDEG

0.440283084

• Example 3: tan (35gra)(GRA mode)

35 E hGRA

–0.612800788

• Example 4: cos–1 ( 2

2 rad) (RAD mode)

2 A L \ 2 = A VRAD

0.785398163

• Example 5: To convert 45 degrees to radians, grads, and

back to degrees

F 4 45 DEG

45.

A F 5RAD

0.785398163

A F 6GRA

50.

A F 4DEG

45.

Repeated conversion between angle units can cause

normally minute error to accumulate, resulting in poor

precision.

kHyperbolic/Inverse Hyperbolic Functions

• Example 1: sinh 3.6 3.6 M S18.28545536

• Example 2: sinh1

30 30 M A j4.094622224

2

3

5

3

fx-82SOLAR II

fx-260SOLAR II

fx-260SOLAR II NF

Basic Calculations

• Use the COMP mode for basic calculations.

• Example 1: 234.553

23 + 4.5 , 53 =–25.5

• Example 2: 56(12)(2.5)

56 -12 E \ 2.5 E =268.8

• Example 3: 23(11020)

2 \ 3 -1 e 20 =6.66666666719

• Example 4: 7845 = 36

7 - 8 , 4 - 5 =36.

• Example 5: = 0.3

4 - 5 \ 6 A N =0.3

• Example 6: 2[76(54)]  122

2 - O 7 + 6 -

O 5 + 4 P P =122.

• You can skip all P operations before the = key.

• Example 7: 4

3π53

4 \ 3 - A x - 5 A N =523.5987756

Constant Calculations

• Press +, ,, -,or \ twice after inputting a number to

make that number a constant.

• “K” is on the display while a constant is being used.

• Use the COMP mode for constant calculations.

• Example 1: 2.33, then 2.36

(2.33) 2.3 + + 3 =K 5.3

(2.36) 6 =K 8.3

• Example 2: 122.3, then 12(9)

(122.3) 12 - - 2.3 =K 27.6

(12(9)) 9 E =K –108.

• Example 3: 17171717  68

(1717) 17 + + =K 34.

(171717) =K 51.

(17171717) =K 68.

• Example 4: 1.74  8.3521

(1.72)1.7 - - =K 2.89

(1.73)=K 4.913

(1.74)=K 8.3521

Memory Calculations

• Use the COMP mode for memory calculations.

• Use AY, |, A{ and Z for memory calculations.

AY replaces current memory contents.

• “M” appears when there is a value in memory.

• To clear memory, press 0AY or tAY.

• Example 1: (536)(238)(562)(994)  210.75

(536) 53 + 6 = A YM 59.

(238) 23 , 8 |M 15.

(562) 56 - 2 |M 112.

(994) 99 \ 4 |M 24.75

(Memory recall) ZM 210.75

• Example 2: To calculate the following using memory as

shown.

M 13.

• Example 3: To calculate the following using memory and

a constant: (123)(453)(783)135.

(123) 3 - - 12 = A YMK 36.

(453) 45 A {MK 135.

(783) 78 |MK 234.

(Memory recall) ZMK 135.

Fraction Calculations

(fx-82SOLAR II/fx-260SOLAR II only)

• Use COMP mode for fraction calculations.

• Total number of digits (including division marks) cannot

exceed 10.

• Example 1:   1

2 C 3 + 4 C 5 =1 7 15.

• Example 2: 3 1  4

3 C 1 C 4 +

1 C 2 C 3 =4 11 12.

• Example 3: 2 C 4 2 4.

=1 2.

• Example 4: 1.6  2.1

1 C 2 + 1.6 = 2.1

Fraction/decimal calculation result is always decimal.

6

45

2

3

4

5

7

15

1

4

2

3

11

12

2

4

1

2

1

2

Handling Precautions

• Be sure to press the 5 key before using the calculator.

• Your calculator is made up of precision components.

Never try to take it apart.

• Avoid dropping your calculator and otherwise subjecting it

to strong impact.

• Do not store the calculator or leave it in areas exposed to

high temperature or humidity, or large amounts of dust.

When exposed to low temperatures, the calculator may

require more time to display results and may even fail to

operate. Correct operation will resume once the calculator

is brought back to normal temperature.

• The display will go blank and keys will not operate during

calculations. When you are operating the keyboard, be

sure to watch the display to make sure that all your key

operations are being performed correctly.

• With certain calculations, it may take some time before the

result is displayed. The display is blank while a calculation

is in progress.

• Avoid using volatile liquids such as thinner or benzine to

clean the unit. Wipe it with a soft cloth, or with a cloth

that has been dipped in a solution of water and a neutral

detergent and wring out.

• In no event will the manufacturer and its suppliers be liable

to you or any other person for any damages, expenses,

lost profits, lost savings, or any other damages arising

out of malfunction, repairs, or insufficient light. The user

should prepare physical records of data to protect against

such data loss.

• Never dispose of the liquid crystal panel, or other

components by burning them.

• Before assuming malfunction of the unit, be sure to

carefully reread this manual and ensure that the problem

is not due to operational error.

• The contents of this manual are subject to change without

notice.

• No part of this manual may be reproduced in any form

without the express written consent of the manufacturer.

• Be sure to keep all user documentation handy for future

reference.

Modes

Application Key

Operation

Mode

Name*

Standard deviation calculations Fl SD

Normal calculations F0 COMP

Calculations using degrees F4 DEG

Calculations using radians F5 RAD

Calculations using grads F6 GRA

Number of decimal place

specification F7 FIX

Number of significant digit

specification F8 SCI

Cancels FIX and SCI settings F9 NORM

* Display indicators show current mode setting. Absence of

display indicator indicates COMP Mode.

• The above table is printed on the back of the calculator.

Note!

• A mode guide is located at the top of the display screen.

• DEG, RAD, and GRA modes can be used in combination

with COMP and SD modes.

• F9 does not exit SD mode.

• F0 exits SD mode.

• F0 does not clear SCI or FIX specifications.

• Always press t before entering DEG, RAD, and GRA

modes.

• Remember to always set the operating mode and angular

unit (DEG, RAD, GRA) before starting your calculation.

User’s Guide

RJA536287-001V02

EN

SA1612-B Printed in China

© 2017 CASIO COMPUTER CO., LTD.

kCommon and Natural Logarithms, Exponents

• Example 1: log 1.23 1.23 R0.089905111

• Example 2: In 90 (loge 90) 90 T4.49980967

• Example 3: Iog 64

Iog 4

64 R \ 4 R =3.

• Example 4: 100.4

5 e3

.4 A Q +

5 - 3 E A U =2.760821773

• Example 5: 232 w 3 =8.

• Example 6: 232 w 3 E =0.125

• Example 7: e10 10 A U22026.46579

• Example 8: log sin 40°+ log cos 35° (DEG mode)

40 S R +35 W R =DEG

–0.278567983

To convert to antilogarithm: A QDEG

0.526540784

• Example 9: 81/3 8 A s 3 =2.

k Square Roots, Cube Roots, Squares,

Reciprocals and Factorials

• Example 1: 2 3 5

2 A L + 3 A L - 5 A L =5.287196909

• Example 2: 35  3

27

5 A D + 27 E A D =–1.290024053

• Example 3: (30)230 E K900.

• Example 4: 1  1

3 4

1

3 A X , 4 A X =

A X 12.

• Example 5: 8! 8 A f40320.

kFIX, SCI, NORM, RND, RAN#, ENG Calculations

• Example 1: 1.2341.234, rounding result to two places

(FIX 2).

F 7 2FIX

0.00

1.234 +1.234 =FIX

2.47

• Example 2: 1.2341.234, rounding input to two places.

F 7 2 1.234 A b +

1.234 A b =FIX

2.46

• Press F 9 to clear FIX specification.

• Example 3: 13, displaying result with two significant

digits (SCI 2).

F 8 2SCI

0.0 00

1 \ 3 =SCI

3.3–01

• Press F 9 to clear SCI specification.

• Example 4: To convert 56,088 meters to kilometers.

56088 A J56.088 03

• Example 5: To convert 0.08125 grams to milligrams.

.08125 A J81.25–03

• Example 6: To generate a random number between

0.000 and 0.999.

Example (results differ each time) A c0.664

kCoordinate Conversion

• Example 1: To convert polar coordinates (r2,



60°) to

rectangular coordinates (x, y). (DEG mode)

x2 A z 60 =DEG

1.

yA NDEG

1.732050808

A N swaps displayed value with value in memory.

• Example 2: To convert rectangular coordinates (1, 3 ) to

polar coordinates (r,



). (RAD mode)

r1 A y 3 A L =RAD

2.

θ

A NRAD

1.047197551

kPermutation

• Example: To determine how many different 4-digit values

can be produced using the numbers 1 through 7.

7 A m 4 =840.

kCombination

• Example: To determine how many different 4-member

groups can be organized in a group of 10 individuals.

10 A n 4 = 210.

CASIO Worldwide Education Website

http://edu.casio.com

Manuals are available in multi languages at

http://world.casio.com/manual/calc

fx-82SOLAR ,,

fx-260SOLAR ,,

fx-260SOLAR ,, NF

EN

fx-82SOLAR_260SOLAR II_NF_EN_161212.indd 1fx-82SOLAR_260SOLAR II_NF_EN_161212.indd 1 16/12/12 10:5116/12/12 10:51

Statistical Calculations (SD Mode)

• Press F l to enter the SD Mode for statistical

calculations using standard deviation.

• If FIX or SCI is on the display, press F 9 first.

• Data input always starts with A u.

• Example: To calculate n1, n, o, n, x, and x2 for the

following data: 55, 54, 51, 55, 53, 53, 54, 52

Enter SD Mode. F lSD

0.

Input Data. A u 55 }

54 } 51 }

55 } 53 } }

54 } 52 }SD

52.

Sample standard deviatio

n

A qSD

1.407885953

Population standard deviation A pSD

1.316956719

Arithmetic mean A `SD

53.375

Number of data A rSD

8.

Sum of values A oSD

427.

Sum of squares of values A aSD

22805.

• } } inputs the same data twice (as above).

• You can also input multiple entries of the same data using

-. To input the data 110 ten times, for example, press 110

-10 }.

• The above results can be obtained in any order, and not

necessarily that shown above.

• To delete data you have just input, press A [.

kMaking Corrections During Data Input

• Example 1: To change data you have just input.

Correct Actual Correction

51 }50 }A

[

51 }

130 -

31 }

120 -t

130 -

31 }

130 -

31 }

120 -

31

t130 -

31 }

• Example 2: To change data you previously input.

Correct Actual Correction

51 }49 }49 A [

51 }

130 -

31 }

120 -

30 }

120 - 30 A [130 -

31 }

Technical Information

kKeys and Their Functions

• General

All clear ................................................ t

Arithmetic calculations ......................... +, ,, -,

.............. \, =

Backspace ........................................... Q

Clear (retains memory) ........................ k

Number input ....................................... 0 – 9, l

Power on; All reset ............................... 5

Sign change ......................................... E

• Memory

Memory in ............................................ A Y

Memory minus ..................................... A {

Memory plus ........................................ |

Memory recall ...................................... Z

• Special

Display/memory swap ......................... A N, A d

Exponent .............................................. e

Internal rounding .................................. A b

Parentheses ......................................... O, P

Pi (3.1415926536) ................................ A x

Select mode ......................................... F

Sexagesimal ........................................ I, A O

Shifts key functions ..............................A

• Scientific Functions

Arc cosine ............................................ A V

Arc sine ................................................ A j

Arc tangent ...........................................A g

Common antilogarithm ........................A Q

Common logarithm ..............................R

Convert to degrees .............................. A F 4

Convert to grads .................................. A F 6

Convert to radians ................................ A F 5

Cosine .................................................. W

Cube .....................................................A N

Cube root ............................................. A D

Engineering .......................................... A J, A P

Factorial ............................................... A f

Fraction* ............................................... C

Fraction* ............................................... A B

Hyperbolic ............................................ M

Natural antilogarithm ...........................A U

Natural logarithm ................................. T

Percent ................................................. A v

Polar-to-rectangular ............................. A z

Power ................................................... w

Random number .................................. A c

Reciprocal ............................................A X

Rectangular-to-polar ............................ A y

• Example: The following operation uses 4 levels and 5

nested parentheses.

2

- O O O 3 + 4 - O O 5 + 4

The table below shows register contents following the

above input.

Register Contents

x4

L1(( 5 

L24 

L3((( 3 

L42 

L5

L6

kFormulas and Ranges

The following are the formulas and ranges that are applied

to various calculations that can be performed using this

calculator.

Coordinate Transformation

• With polar coordinates,

θ

can be calculated within a range

of –180° 

θ

 180°. The calculation range is the same for

radians and grads.

\

<

;

3[\

[

U

<

3RO

5HF

;

θ

θ

3U

Permutation

• Input range: n  r  0 (n, r : integers)

• Formula: nPr 

Combination

• Input range: n  r  0 (n, r : integers)

• Formula:

nCr 

Population Standard Deviation

Q Q



L  1

Q([L– [)2

Q

[2 – ([)2 / Q

Sample Standard Deviation

Q– 1 Q– 1



L  1

Q([L– [)2

[2 – ([)2 / Q

Q– 1

Arithmetic Mean

oQ



L  1

Q[L[

Q

Input Ranges

Functions Input Range

sinx

cosx

tanx

(DEG) x9109

(RAD) x5107π rad

(GRA) x11010 grad

However, for tan x:

x≠ 90(2n1):DEG

x≠ π2·(2n1):RAD

x≠ 100(2n1):GRA

sin–1x

cos–1xx 1

tan–1xx 1 

10100

sinhx

coshxx 230.2585092

tanhxx 1

10100

sinh–1xx 5 

1099

cosh–1x1 x  5 

1099

tanh–1xx 1

logx/lnx1

10–99

 x  1 

10100

10x–1

10100

 x 

100

ex–1

10100

 x  230.2585092

[0 x  1 

10100

x2x 1

1050

x3x 2.154434690 

10

33

1/xx 1

10100 ;

x ≠

0

[

3x 1

10100

x!0

 x 

69 (

x is an integer)

nPr/nCr

0 r n

n11010

(n and r are integers)

R→P

x2  y2110100

P→R

0 r  110100

(DEG) 



9109

(RAD) 



5107π rad

(GRA) 



11010 grad

°’ ”

Input and Results:

Total of hour, minutes, and seconds digits

must be 10 or fewer (including separator

symbols)

Decimal ↔ Sexagesimal Conversions

x 2777777.777

xy

x0: –110100ylogx100

x0: y0

x0: yn;1

2n1(n is an integer)

However: –110100 ylogx100

x1/y

x0: y ≠ 0

–1101001/y logx100

x0: y0

x0: y2n1; 1

m(m ≠ 0; m and n are integers)

However: –110100 1/y logx100

a b/c*

Total of integer, numerator, and denominator

must be 10 digits or less(including division

marks).

n!

(nr)!

n!

r!(nr)!

Root ...................................................... A s

Sine ......................................................S

Squ are .................................................. K

Square root .......................................... A L

Tangent ................................................ h

Permutatio n .......................................... A m

Combination ......................................... A n

* fx-82SOLAR II/fx-260SOLAR II only

• Statistics (SD Mode)

Arithmetic mean ................................... A `

Data delete ........................................... A [

Data input ............................................. }

Number of data .................................... A r

Population standard deviation .............A p

Sample standard deviation .................. A q

Statistical register clear ....................... A u

Sum of squares of values .................... A a

Sum of values ...................................... A o

kExponential Display Formats

This calculator can display up to 10 digits. Larger values are

automatically displayed using exponential notation. In the

case of decimal value, you can select between two formats

that determine at what point exponential notation is used.

• 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.

To switch between NORM 1 and NORM 2

Press F 9. There is no indication on the display of which

format is currently in effect, but you can determine the

setting by performing the following calculation.

1 \ 200 =5. –03 NORM 1 format

0.005 NORM 2 format

• All of the examples in this manual show calculation results

using the NORM 1 format.

kWhen you have a problem......

If calculation results are not what you expect or if an error

occurs, perform the following steps.

1. F 0 (COMP mode)

2. F 4 (DEG mode)

3. F 9 (NORM mode)

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.

kMaking Corrections During Calculations

• If you make a mistake when inputting a value (but did

not yet press an operator key), use Q to backspace and

delete input digits one-by-one. Or you can press k to

clear the input entirely and start again.

• In a series of calculations, press k while an intermediate

result is displayed to clear only the last calculation

performed.

• To change the operator key (+, ,, -, \, w, As,

etc.) you just pressed, simply press the correct operator

key. In this case, the operator of the last key you press is

used, but the operation retains the order of precedence of

the operation for the first key you pressed.

kOverflow or Error Check

The following conditions make further calculation impossible.

a. When a result (whether intermediate or final) or a total

accumulated in memory is greater than ±9.999999999

 1099. (“–E–” indicator appears on the display.)

b. When function calculations are performed using a value

that exceeds the input range. (“–E–” indicator appears

on the display.)

c. When an illogical operation (such as an attempt to

calculate o and σn while n  0) is performed during

statistical calculations. (“–E–” indicator appears on the

display.)

d. When an illegal mathematical operation (such as division

by zero) is performed. (“–E–” indicator appears on

display.)

e. The total number of nested parentheses levels exceeds

six, or when more than 18 pairs of parentheses are used.

(“– 1–” indicator appears on the display.)

• To clear any of the above conditions, press t and

perform the calculation from the beginning.

• In the case of condition e, you could also press k. This

clears the intermediate result just prior to the overflow, so

you can continue with the calculation from that point.

• No error occurs when the result is within the range of

(11099) to (11099). Instead, the display shows all

zeros.

kPower Supply

This calculator is powered by a solar cell that converts

available light into electrical power.

Solar Cell Precautions

• The solar cell requires at least 50 lux of light to provide

power.

• If available light is too low, the display may become dim,

calculation functions may become impossible, or the

contents of the independent memory may be lost. If this

happens, move to an area with more light.

kOrder of Operations and Levels

Operations are performed in the following order of

precedence.

1. Functions

2. xy, x1/y, R →P, P →R, nPr, nCr

3. , 

4. , 

• Operations with the same precedence are performed

from left to right, with operations enclosed in parentheses

performed first. If parentheses are nested, the operations

enclosed in the innermost set of parentheses are

performed first.

• Registers L1 through L6 store operations. There are six

registers, so calculations up to six levels can be stored.

• Each level can contain up to three open parentheses, so

parentheses can be nested up to 18 times. RJA536287-001V02

Functions Input Range

SD

x 11050

n 110100

n, o : n ≠ 0

n –1 : n ≠ 0, 1

* fx-82SOLAR II/fx-260SOLAR II only

• For a single calculation, calculation error is 1 at the 10th

digit. (In the case of exponential display, calculation error

is 1 at the last significant digit.) Errors are cumulative

in the case of consecutive calculations, which can also

cause them to become large. (This is also true of internal

consecutive calculations that are performed in the case of

xy, x1/y, x!, 3x, nPr, nCr, etc.)

In the vicinity of a function’s singular point and point of

inflection, errors are cumulative and may become large.

Calculation Capacity:

• Input/Basic Calculations

10-digit mantissa; or 10-digit mantissa plus 2-digit

exponent up to 10±99

kSpecifications

Power Supply: Solar cell

Operating Temperature: 0°C40°C (32°104°F)

Dimensions: 9 (H)  70.5 (W)  121.5 (D) mm

3/8" (H)  2-3/4" (W)  4-3/4" (D)

Weight: 55g (1.9oz)

CASIO COMPUTER CO., LTD.

6-2, Hon-machi 1-chome,

Shibuya-ku, Tokyo 151-8543, Japan

Manufacturer:

CASIO COMPUTER CO., LTD.

6-2, Hon-machi 1-chome

Shibuya-ku, Tokyo 151-8543, Japan

Responsible within the European Union:

Casio Europe GmbH

Casio-Platz 1

22848 Norderstedt, Germany

www.casio-europe.com

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