User Manual
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It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. The user should prepare physical records of data to ...protect against such data loss. • Never dispose of battery (fx-85B/fx-280), the liquid crystal panel, or other damages arising out of the unit, be sure to watch the display to strong impact. • Do not store the calculator or leave it with a soft cloth, or with a cloth that all...
It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. The user should prepare physical records of data to ...protect against such data loss. • Never dispose of battery (fx-85B/fx-280), the liquid crystal panel, or other damages arising out of the unit, be sure to watch the display to strong impact. • Do not store the calculator or leave it with a soft cloth, or with a cloth that all...
User Manual
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...calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification F7 FIX Number of the manufacturer. • Keep this manual on hand for future reference. fully reread this manual and ensure that the 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...
...calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification F7 FIX Number of the manufacturer. • Keep this manual on hand for future reference. fully reread this manual and ensure that the 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...
User Manual
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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 - O 7 + 6 - 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 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - O 7 + 6 - 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 -
User Manual
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... 7: 4/3π53 4 \ 3 - K 34. 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҂(ȕ9)) 9 E = K 27...
... 7: 4/3π53 4 \ 3 - K 34. 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҂(ȕ9)) 9 E = K 27...
User Manual
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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. • ...= A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 -
• 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. • ...= A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 -
User Manual
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MK 234. t 123 A J 1 123. - 8 - 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. ...
MK 234. t 123 A J 1 123. - 8 - 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. ...
User Manual
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...; 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. - 9 - Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 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. - 9 - Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂...
User Manual
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• Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3. Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875.
• Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3. Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875.
User Manual
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...;25'36" + 12°23'34" = 26°49'10" 14 I 25 I 36 I + 12 I 23 I 34 I = 26°49°10. - 11 - 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. • =3.1415926536. K 216. K 276. • Example 4: To discount...
...;25'36" + 12°23'34" = 26°49'10" 14 I 25 I 36 I + 12 I 23 I 34 I = 26°49°10. - 11 - 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. • =3.1415926536. K 216. K 276. • Example 4: To discount...
User Manual
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... SD Mode for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. Enter SD Mode. θ A N RAD 1.047197551 kPermutation • Example: To determine how many different 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. F l SD 0. - 18 - kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If...
... SD Mode for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. Enter SD Mode. θ A N RAD 1.047197551 kPermutation • Example: To determine how many different 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. F l SD 0. - 18 - kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If...
User Manual
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... 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. • 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. - 24 - • Statistics (SD Mode) Arithmetic mean A ` Data ...
... 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. • 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. - 24 - • Statistics (SD Mode) Arithmetic mean A ` Data ...
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... the examples in this manual show calculation results using the NORM 1 format. kWhen you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format 0.005 NORM 2 format • All of which format is correct. 5. If calculation results are working with to backspace and delete input digits one . F 9 (NORM mode) 4. Or you...
... the examples in this manual show calculation results using the NORM 1 format. kWhen you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format 0.005 NORM 2 format • All of which format is correct. 5. If calculation results are working with to backspace and delete input digits one . F 9 (NORM mode) 4. Or you...
User Manual
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... in memor y is greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on display.) e. kOverflow or Error Check The following conditions make further calculation impossible. 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. When function calculations are used , but the operation retains the order of precedence of the operation for the first...
... in memor y is greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on display.) e. kOverflow or Error Check The following conditions make further calculation impossible. 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. When function calculations are used , but the operation retains the order of precedence of the operation for the first...
User Manual
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...CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of the independent memory may be restored by pressing 5. - 27 - • In the case of ѿ(1҂10Ҁ99)to an area with the calculation from that converts available light into electrical power. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator..., which makes it possible for the calculator to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and...
...CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of the independent memory may be restored by pressing 5. - 27 - • In the case of ѿ(1҂10Ҁ99)to an area with the calculation from that converts available light into electrical power. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator..., which makes it possible for the calculator to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and...
User Manual
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...in place, and then remove the cover. 2. Replace the back cover and secure it is used. Install a new battery, making sure that hold the back cover in place with your physician immediately. Incorrect use of small children. If swallowed, consult with the screws. - 28 - To replace the battery... can see it ). • Never try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the calculator. • Be sure to become shorted. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of batteries...
...in place, and then remove the cover. 2. Replace the back cover and secure it is used. Install a new battery, making sure that hold the back cover in place with your physician immediately. Incorrect use of small children. If swallowed, consult with the screws. - 28 - To replace the battery... can see it ). • Never try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the calculator. • Be sure to become shorted. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of batteries...
User Manual
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If parentheses are performed from left to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Functions 2. formed first. edence. 1. xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ...register contents following order of parentheses are performed first. • Registers L through L store operations.There are six reg- 1 6 isters, 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 ...
If parentheses are performed from left to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Functions 2. formed first. edence. 1. xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ...register contents following order of parentheses are performed first. • Registers L through L store operations.There are six reg- 1 6 isters, 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 ...
User Manual
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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.