User Manual
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... arising out of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. Handling Precautions • Your calculator is brought back to normal temperature. • The display will go blank and keys will not operate during calculations.When you or any...
... arising out of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. Handling Precautions • Your calculator is brought back to normal temperature. • The display will go blank and keys will not operate during calculations.When you or any...
User Manual
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... problem is not due to low battery power (fx-85B/fx-280) or 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 significant digit specification F8 SCI Cancels FIX and SCI settings F9 NORM * Display indicators show current mode setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees...
... problem is not due to low battery power (fx-85B/fx-280) or 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 significant digit specification F8 SCI Cancels FIX and SCI settings F9 NORM * Display indicators show current mode setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees...
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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. - 4 -
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. - 4 -
User Manual
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O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 7 + 6 -
O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 7 + 6 -
User Manual
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K 51. K 34. K 68. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - • Example 7: 4/3π53 4 \ 3 - 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: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂...
K 51. K 34. K 68. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - • Example 7: 4/3π53 4 \ 3 - 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: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂...
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• Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory Calculations • Use the COMP mode for memory calculations. • Use A Y, |, A { and Z for memory calculations. A Y replaces current memory contents. • "M" appears when there is a value in memory. • To clear memory, press 0 A Y or t A Y. • Example 1: (53ѿ6)ѿ(23Ҁ8)ѿ(56҂2)ѿ(99Ö4)҃210.75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M ...
• Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory Calculations • Use the COMP mode for memory calculations. • Use A Y, |, A { and Z for memory calculations. A Y replaces current memory contents. • "M" appears when there is a value in memory. • To clear memory, press 0 A Y or t A Y. • Example 1: (53ѿ6)ѿ(23Ҁ8)ѿ(56҂2)ѿ(99Ö4)҃210.75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M ...
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kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. • Example 1: To input 123 in memory A. t 123 A J 1 123. - 8 - MK 234. MK 135. M 13. • Example 3: To calculate the following using memory and a constant: (12...
kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. • Example 1: To input 123 in memory A. t 123 A J 1 123. - 8 - MK 234. MK 135. M 13. • Example 3: To calculate the following using memory and a constant: (12...
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Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 1 123. • Example 2: To store the results of digits (including division marks) cannot exceed 10. • Example 1: 2 3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - ...
Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 1 123. • Example 2: To store the results of digits (including division marks) cannot exceed 10. • Example 1: 2 3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - ...
User Manual
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... time) A c 0.664 kCoordinate Conversion • Example 1: To convert polar coordinates (r҃2, ҃60°) to milligrams. .08125 A J 81.25-03 • Example 6: To generate a random number between 0.000 and 0.999. • Example 4: To convert 56,088 meters to kilometers. 56088 A J 56.088 03 • Example 5: To convert 0.08125 grams to rectangular coordinates (x, y). (DEG mode) x 2 A z 60 = DEG 1. y A N DEG 1.732050808 A N swaps displayed value with value in memory...
... time) A c 0.664 kCoordinate Conversion • Example 1: To convert polar coordinates (r҃2, ҃60°) to milligrams. .08125 A J 81.25-03 • Example 6: To generate a random number between 0.000 and 0.999. • Example 4: To convert 56,088 meters to kilometers. 56088 A J 56.088 03 • Example 5: To convert 0.08125 grams to rectangular coordinates (x, y). (DEG mode) x 2 A z 60 = DEG 1. y A N DEG 1.732050808 A N swaps displayed value with value in memory...
User Manual
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... a group of 10 individuals. 10 A n 4 = 210. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To...
... a group of 10 individuals. 10 A n 4 = 210. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To...
User Manual
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... standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. A a SD 22805. • } } inputs the same data twice (as above . • To delete data you have just input, press A [. - 19 - A q SD 1.407885953 A p SD 1.316956719 A ` SD 53.375 A r SD 8. To input the data 110 ten times, for example, press 110 -10 }. • The above results can be obtained in any order...
... standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. A a SD 22805. • } } inputs the same data twice (as above . • To delete data you have just input, press A [. - 19 - A q SD 1.407885953 A p SD 1.316956719 A ` SD 53.375 A r SD 8. To input the data 110 ten times, for example, press 110 -10 }. • The above results can be obtained in any order...
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All clear t Sign change E • Memory Memory in A Y Memory minus A { Memory plus Memory recall Z • fx-85B/fx-280 Memory Memory A recall 0 1 Memory B recall 0 2 Memory M recall 0 3 Memory A store A J 1 - 21 - Technical Information kKeys and Their Functions • General Arithmetic calculations Backspace Q Clear(retains memory k Number input 0 - 9, l Power on;
All clear t Sign change E • Memory Memory in A Y Memory minus A { Memory plus Memory recall Z • fx-85B/fx-280 Memory Memory A recall 0 1 Memory B recall 0 2 Memory M recall 0 3 Memory A store A J 1 - 21 - Technical Information kKeys and Their Functions • General Arithmetic calculations Backspace Q Clear(retains memory k Number input 0 - 9, l Power on;
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... (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 decimal value, you can display up to 10 digits. In the case of values A o kExponential Display Formats This calculator 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...
... (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 decimal value, you can display up to 10 digits. In the case of values A o kExponential Display Formats This calculator 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...
User Manual
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... modes to clear the input entirely and start again. - 25 - There is correct. 5. If calculation results are working with to backspace and delete input digits one . kMaking Corrections During Calculations • If you make a mistake when inputting a value (but did not yet press an operator key), use Q to confirm it is no indication on the display of the examples in effect, but you have a problem... To switch...
... modes to clear the input entirely and start again. - 25 - There is correct. 5. If calculation results are working with to backspace and delete input digits one . kMaking Corrections During Calculations • If you make a mistake when inputting a value (but did not yet press an operator key), use Q to confirm it is no indication on the display of the examples in effect, but you have a problem... To switch...
User Manual
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... Error Check The following conditions make further calculation impossible. When function calculations are used , but the operation retains the order of precedence of the operation for the first key you just pressed, simply press the correct operator key. When an illegal mathematical operation (such as an attempt to clear only the last calculation performed. • To change the operator key w, As, etc.) you pressed. • In a series of calculations...
... Error Check The following conditions make further calculation impossible. When function calculations are used , but the operation retains the order of precedence of the operation for the first key you just pressed, simply press the correct operator key. When an illegal mathematical operation (such as an attempt to clear only the last calculation performed. • To change the operator key w, As, etc.) you pressed. • In a series of calculations...
User Manual
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... TWO-WAY POWER system uses two power sources: a solar cell and a single G13 Type (SR44 or LR44) battery. • Weak battery power is powered by a solar cell that point. • No error occurs when the result is too low, the display may become dim, calculation functions may become impossible, or the contents of the independent memory may be restored by the CASIO TWO- WAY POWER system, which makes it...
... TWO-WAY POWER system uses two power sources: a solar cell and a single G13 Type (SR44 or LR44) battery. • Weak battery power is powered by a solar cell that point. • No error occurs when the result is too low, the display may become dim, calculation functions may become impossible, or the contents of the independent memory may be restored by the CASIO TWO- WAY POWER system, which makes it...
User Manual
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... batteries can cause memory contents to become shorted. Remove the screws that hold the back cover in place with the calculator when you can see it is used. It may leak, causing serious damage to become corrupted or lost completely. Install a new battery, making sure that comes with the screws. - 28 - Old batteries may not provide full service life. • Low bettery power...
... batteries can cause memory contents to become shorted. Remove the screws that hold the back cover in place with the calculator when you can see it is used. It may leak, causing serious damage to become corrupted or lost completely. Install a new battery, making sure that comes with the screws. - 28 - Old batteries may not provide full service life. • Low bettery power...
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Press t to turn power on the next page shows register contents following order of prec- xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ, Ҁ • Operations with operations enclosed in the following the above input. - 29 - formed first. If parentheses are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to...
Press t to turn power on the next page shows register contents following order of prec- xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ, Ҁ • Operations with operations enclosed in the following the above input. - 29 - formed first. If parentheses are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to...
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Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - The calculation range is the same for radians and grads. Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator.
Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - The calculation range is the same for radians and grads. Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator.
User Manual
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Operating Temperature: 0°C-40°C (32°F-104°F) Dimensions: fx-82SOLAR/fx-260SOLAR: 8(H)i66.5(W)i125(D) mm 5/16"(H)i2-5/8"(W)i4-15/16"(D) fx-85B/fx-280: 13.5(H)i73(W)i144.5(D) mm 1/2"(H)i2-7/8"(W)i5-5/8"(D) Weight: fx-82SOLAR/fx-260SOLAR: 47 g (1.7oz) fx-85B/fx-280: 67 g (2.4oz) including battery Calculation Capacity: • Input/ Basic Calculations 10-digit mantissa; or 10-digit mantissa plus 2-digit exponent up to 10±99 - 35 -
Operating Temperature: 0°C-40°C (32°F-104°F) Dimensions: fx-82SOLAR/fx-260SOLAR: 8(H)i66.5(W)i125(D) mm 5/16"(H)i2-5/8"(W)i4-15/16"(D) fx-85B/fx-280: 13.5(H)i73(W)i144.5(D) mm 1/2"(H)i2-7/8"(W)i5-5/8"(D) Weight: fx-82SOLAR/fx-260SOLAR: 47 g (1.7oz) fx-85B/fx-280: 67 g (2.4oz) including battery Calculation Capacity: • Input/ Basic Calculations 10-digit mantissa; or 10-digit mantissa plus 2-digit exponent up to 10±99 - 35 -