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...or any other components by burning them. • Before assuming malfunction of precision components. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. The user should prepare physical records of data to protect against such data loss. • ...the unit, be liable to you are being performed correctly. • Never leave the dead battery (fx-85B/fx-280) in areas exposed to care- 2 - When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. Wipe it in...
...or any other components by burning them. • Before assuming malfunction of precision components. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate. The user should prepare physical records of data to protect against such data loss. • ...the unit, be liable to you are being performed correctly. • Never leave the dead battery (fx-85B/fx-280) in areas exposed to care- 2 - When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. Wipe it in...
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...* Standard deviation calculations Fl SD Normal 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 display indicator indicates COMP Mode. - 3 - Absence of significant digit specification F8 SCI... Cancels FIX and SCI settings F9 NORM * Display indicators show current mode setting. fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational...
...* Standard deviation calculations Fl SD Normal 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 display indicator indicates COMP Mode. - 3 - Absence of significant digit specification F8 SCI... Cancels FIX and SCI settings F9 NORM * Display indicators show current mode setting. fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational...
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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 -
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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 - 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 -
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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...;17) = (17ѿ17 ѿ17ѿ17) = - 6 - • Example 7: 4/3π53 4 \ 3 - K 51. K 34. K 68. 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: 2.3ѿ3, 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...;17) = (17ѿ17 ѿ17ѿ17) = - 6 - • Example 7: 4/3π53 4 \ 3 - K 51. K 34. K 68. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, -
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....75 (53ѿ6) 53 + 6 = 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...
....75 (53ѿ6) 53 + 6 = 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...
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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. ...
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. ...
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t 0 2 56088. t 123 - 456 A J 2 56088. 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...
t 0 2 56088. t 123 - 456 A J 2 56088. 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...
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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.
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...;49°10. - 11 - • 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%) (18%) (23%) 1200 - - 12 A v 18 A v 23 A v K 144. K 216. K 276. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may...
...;49°10. - 11 - • 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%) (18%) (23%) 1200 - - 12 A v 18 A v 23 A v K 144. K 216. K 276. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may...
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• 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 S 0.999447513 • Example 4: 1.23↔ 1°13'48" 1.23 I I I 1°13°48. 1.23 1°13°48. • Example 5: 12°34' ↔ 12.56666667 12 I 34 I A O 12.56666667 You can also use I when inputting values to convert between sexagesimal and decimal. kTrigonometric/Inverse Trigonometric Functions • Example 1: sin ( 6 rad) (RAD mode) A x \ 6 = S RAD 0.5 - 12 -
• 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 S 0.999447513 • Example 4: 1.23↔ 1°13'48" 1.23 I I I 1°13°48. 1.23 1°13°48. • Example 5: 12°34' ↔ 12.56666667 12 I 34 I A O 12.56666667 You can also use I when inputting values to convert between sexagesimal and decimal. kTrigonometric/Inverse Trigonometric Functions • Example 1: sin ( 6 rad) (RAD mode) A x \ 6 = S RAD 0.5 - 12 -
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...10 A n 4 = 210. F l SD 0. - 18 - Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. Enter SD Mode. 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 calculate nҀ1, n, o, n, ⌺x, and ⌺...
...10 A n 4 = 210. F l SD 0. - 18 - Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. Enter SD Mode. 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 calculate nҀ1, n, o, n, ⌺x, and ⌺...
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... A ` SD 53.375 A r SD 8. Sample standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. Input Data. A a SD 22805. • } } inputs the same data twice (as above). • You can be obtained in any order, and not necessarily that shown... input multiple entries of values A u 55 } 54 } 51 } 55 } 53 } } 54 } 52 } SD 52. To input the data 110 ten times, for example, press 110 -10 }. • The above . • To delete data you have just input, press A [. - 19 -
... A ` SD 53.375 A r SD 8. Sample standard deviation Population standard deviation Arithmetic mean Number of data Sum of values Sum of squares of the same data using -. Input Data. A a SD 22805. • } } inputs the same data twice (as above). • You can be obtained in any order, and not necessarily that shown... input multiple entries of values A u 55 } 54 } 51 } 55 } 53 } } 54 } 52 } SD 52. To input the data 110 ten times, for example, press 110 -10 }. • The above . • To delete data you have just input, press A [. - 19 -
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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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...mode) 3. Or you can press k to perform the calculation and try again. If calculation results are working with to confirm it is currently in effect, but did not yet press an operator key), use Q to backspace and delete input digits one-by performing the following steps. 1. Enter the correct... modes to clear the input entirely and start again. - 25 - F 9 (NORM mode) 4. kMaking Corrections During Calculations • If you make a mistake when...
...mode) 3. Or you can press k to perform the calculation and try again. If calculation results are working with to confirm it is currently in effect, but did not yet press an operator key), use Q to backspace and delete input digits one-by performing the following steps. 1. Enter the correct... modes to clear the input entirely and start again. - 25 - F 9 (NORM mode) 4. kMaking Corrections During Calculations • If you make a mistake when...
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...To clear any of the above conditions, press t and perform the calculation from the beginning. - 26 - In this case, the operator of the last key you pressed. When function calculations are used , but the operation retains the order of precedence of the operation... for the first key you press is performed during statistical calculations. ("-E-" indicator appears on the display.) c. • In a series of calculations, press k while an intermediate result is displayed to calculate o and σn while n ҃ 0) is used . ("- 1-" indicator appears on the display.) b. a. ...
...To clear any of the above conditions, press t and perform the calculation from the beginning. - 26 - In this case, the operator of the last key you pressed. When function calculations are used , but the operation retains the order of precedence of the operation... for the first key you press is performed during statistical calculations. ("-E-" indicator appears on the display.) c. • In a series of calculations, press k while an intermediate result is displayed to calculate o and σn while n ҃ 0) is used . ("- 1-" indicator appears on the display.) b. a. ...
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... you can continue with more light. • fx-85B/fx-280 This calculator is powered by the CASIO TWO- kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by pressing 5. - 27 - This clears the intermediate result just prior to Ҁ(1҂10Ҁ99). WAY POWER system, which makes it ...into electrical power. If this happens, move 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 a single G13 Type (SR44 or LR44) battery. ...
... you can continue with more light. • fx-85B/fx-280 This calculator is powered by the CASIO TWO- kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by pressing 5. - 27 - This clears the intermediate result just prior to Ҁ(1҂10Ҁ99). WAY POWER system, which makes it ...into electrical power. If this happens, move 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 a single G13 Type (SR44 or LR44) battery. ...
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...to burst or leak, possibly damaging the calculator. • Be sure to the interior of how much the calculator is facing up (so you can see it ). 4. If swallowed, consult with the calculator when you purchase it is for testing only. Incorrect use of batteries can cause memory contents to ...screws that the positive (ѿ) side is used. Replace the back cover and secure it in place, and then remove the cover. 2. It may leak, causing serious damage to replace the battery at least once every three years, regardless of the calculator. • The battery that comes with your...
...to burst or leak, possibly damaging the calculator. • Be sure to the interior of how much the calculator is facing up (so you can see it ). 4. If swallowed, consult with the calculator when you purchase it is for testing only. Incorrect use of batteries can cause memory contents to ...screws that the positive (ѿ) side is used. Replace the back cover and secure it in place, and then remove the cover. 2. It may leak, causing serious damage to replace the battery at least once every three years, regardless of the calculator. • The battery that comes with your...
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...in the 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 ...18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . formed first. Press t to right, with the same precedence are nested,...
...in the 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 ...18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . formed first. Press t to right, with the same precedence are nested,...
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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.