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.../fx-280) 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 are operating the keyboard, be sure to care- 2 - Correct operation will resume once the calculator is made up of precision components. ...When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. Handling Precautions •...
.../fx-280) 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 are operating the keyboard, be sure to care- 2 - Correct operation will resume once the calculator is made up of precision components. ...When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. Handling Precautions •...
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...mode setting. Modes Application Key Mode Operation Name* 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 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx...
...mode setting. Modes Application Key Mode Operation Name* 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 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx...
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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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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 - O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - O 7 + 6 -
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... 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 27.6 K... (17ѿ17) 17 + + = (17ѿ17 ѿ17) = (17ѿ17 ѿ17ѿ17) = - 6 - K 68. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - K 34.
... 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 27.6 K... (17ѿ17) 17 + + = (17ѿ17 ѿ17) = (17ѿ17 ѿ17ѿ17) = - 6 - K 68. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, - K 34.
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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 -
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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. MK 135. M 13. • Example 3: To calculate...
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. MK 135. M 13. • Example 3: To calculate...
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...; Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (including division marks) ... 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 - t 0 2 56088.
...; Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (including division marks) ... 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 - t 0 2 56088.
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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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K 216. K 276. 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. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34" = ...I 34 I = 26°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...
K 216. K 276. 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. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34" = ...I 34 I = 26°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...
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FIX 2.46 • Example 3: 1Ö 3 , displaying result with two significant digits (SCI 2). F 7 2 1.234 A b + 1.234 A b = • Press F 9 to two places (FIX 2). kFIX, SCI, NORM, RND, RAN#, ENG Calculations • Example 1: 1.234ѿ1.234, rounding result to clear FIX specification. F 7 2 FIX 0.00 1.234 +1.234 = FIX 2.47 • Example 2: 1.234ѿ1.234, rounding input to clear SCI specification. - 16 - • Example 5: 8! 8 Af 40320. F 8 2 SCI 0.0 00 1 \3 = SCI 3.3-01 • Press F 9 to two places.
FIX 2.46 • Example 3: 1Ö 3 , displaying result with two significant digits (SCI 2). F 7 2 1.234 A b + 1.234 A b = • Press F 9 to two places (FIX 2). kFIX, SCI, NORM, RND, RAN#, ENG Calculations • Example 1: 1.234ѿ1.234, rounding result to clear FIX specification. F 7 2 FIX 0.00 1.234 +1.234 = FIX 2.47 • Example 2: 1.234ѿ1.234, rounding input to clear SCI specification. - 16 - • Example 5: 8! 8 Af 40320. F 8 2 SCI 0.0 00 1 \3 = SCI 3.3-01 • Press F 9 to two places.
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... 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 ⌺x2 for the following data : 55, 54, 51, 55, 53, 53, 54, 52. Statistical...
... 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 ⌺x2 for the following data : 55, 54, 51, 55, 53, 53, 54, 52. Statistical...
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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; 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 -
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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 ...
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 ...
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... are working with to clear the input entirely and start again. - 25 - Or 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. There is no indication on the display of... the examples in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 0 (COMP mode) 2. Enter the correct modes to backspace and delete input digits one-by performing the following steps. 1. Check...
... are working with to clear the input entirely and start again. - 25 - Or 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. There is no indication on the display of... the examples in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 0 (COMP mode) 2. Enter the correct modes to backspace and delete input digits one-by performing the following steps. 1. Check...
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... 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, press k while an intermediate result is greater than 18 pairs of parentheses are ...first key you just pressed, simply press the correct operator key. kOverflow or Error Check The following conditions make further calculation impossible. When function calculations are used , but the operation retains the order of precedence of nested parentheses levels exceeds six, or when more...
... 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, press k while an intermediate result is greater than 18 pairs of parentheses are ...first key you just pressed, simply press the correct operator key. kOverflow or Error Check The following conditions make further calculation impossible. When function calculations are used , but the operation retains the order of precedence of nested parentheses levels exceeds six, or when more...
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... by pressing 5. - 27 - Instead, the display shows all zeros. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of light to an area with the calculation from that converts available light into electrical power. • In the case of...
... by pressing 5. - 27 - Instead, the display shows all zeros. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- Solar Cell Precautions • The solar cell requires at least 50 lux of light to an area with the calculation from that converts available light into electrical power. • In the case of...
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...of batteries 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 replace the battery at least once every three years, regardless of all important data. • Always be sure to ...battery 1. If swallowed, consult with its positive (ѿ) side facing up (so you purchase it ). 4. Always keep written records of how much the calculator is facing up (so you can cause them to load the battery with your physician immediately. Replace the back cover and secure it in place...
...of batteries 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 replace the battery at least once every three years, regardless of all important data. • Always be sure to ...battery 1. If swallowed, consult with its positive (ѿ) side facing up (so you purchase it ). 4. Always keep written records of how much the calculator is facing up (so you can cause them to load the battery with your physician immediately. Replace the back cover and secure it in place...
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... performed in parentheses per- xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ, Ҁ • Operations with the same precedence 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...
... performed in parentheses per- xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ 4. ѿ, Ҁ • Operations with the same precedence 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...
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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. 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 -
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. 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 -