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Casio fx-82 User Manual

Casio fx-82 User Manual

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User's Guide
CASIO Worldwide Education Website


Table of Contents

Summary of Contents for Casio fx-82

  • Page 1 PLUS II User’s Guide CASIO Worldwide Education Website CASIO EDUCATIONAL FORUM RJA528034-001V01...
  • Page 2: Table Of Contents

    Contents Important Information ............. 2 Sample Operations ..............2 Initializing the Calculator ............2 Safety Precautions ..............2 Handling Precautions .............. 2 Removing the Hard Case ............3 Turning Power On and Off ............3 Adjusting Display Contrast ............ 3 Key Markings ................
  • Page 3: Important Information

    • The contents of this manual are subject to change without notice. • In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it.
  • Page 4: Removing The Hard Case

    • Never try to take the calculator apart. • Use a soft, dry cloth to clean the exterior of the calculator. • Whenever discarding the calculator or batteries, be sure to do so in accordance with the laws and regulations in your particular area. * Company and product names used in this manual may be registered trademarks or trademarks of their respective owners.
  • Page 5: Reading The Display

    Reading the Display The display of the calculator shows expressions you input, calculation results, and various indicators. Input expression Indicators Math Math Math Math Calculation result • If a ' indicator appears on the right side of the calculation result, it means the displayed calculation result continues to the right.
  • Page 6: Using Menus

    Important: For some type of calculation that takes a long time to execute, the display may show only the above indicators (without any value) while it performs the calculation internally. Using Menus Some of the calculator’s operations are performed using menus. Pressing N or w, for example, will display a menu of applicable functions.
  • Page 7: Inputting Expressions And Values

    3Deg 4Rad 5Gra Specifies degrees, radians or grads as the angle unit for value input and calculation result display. Note: In this manual, the v symbol next to a sample operation indicates degrees, while the V symbol indicates radians. 6Fix 7Sci 8Norm Specifies the number of digits for display of a calculation result.
  • Page 8 4 × sin30 × (30 + 10 × 3) = 120 4 *s 30 )*( 30 + 10 * 3 )= Math Math Input of the closing parenthesis is required for sin, sinh, and other functions that include parentheses. These multiplication symbols ( × ) can be omitted. A multiplication symbol can be omitted when it occurs immediately before an opening parenthesis, immediately before sin or other function that includes parentheses, immediately before the Ran# (random number) function, or immediately...
  • Page 9: Calculation Priority Sequence

    Math Math Note: • If the calculation becomes longer than the screen width during input, the screen will scroll automatically to the right and the ] indicator will appear on the display. When this happens, you can scroll back to the left by using d and e to move the cursor.
  • Page 10 2 + ' 2 1 + ' 2 Math Math ' 2 +! 2 ee 1 +! 2 = Important: • Certain types of expressions can cause the height of a calculation formula to be greater than one display line. The maximum allowable height of a calculation formula is two display screens (31 dots ×...
  • Page 11: Toggling Calculation Results

    Correcting and Clearing an Expression To delete a single character or function: Move the cursor so it is directly to the right of the character or function you want to delete, and then press Y. In the overwrite mode, move the cursor so it is directly under the character or function you want to delete, and then press Y.
  • Page 12 Note: • Mixing fractions and decimal values in a calculation while Linear Display is selected will cause the result to be displayed as a decimal value. • Fractions in calculation results are displayed after being reduced to their lowest terms. To switch a calculation result between improper fraction and mixed fraction form: Perform the following key operation: 1f( <...
  • Page 13: Using Engineering Notation

    Using Engineering Notation A simple key operation transforms a displayed value to engineering notation. Transform the value 1234 to engineering notation, shifting the decimal point to the right. 1234 1234 = 1.234×10 1234×10 Transform the value 123 to engineering notation, shifting the decimal point to the left.
  • Page 14 / 30 = (Continuing) 123 + 456 = 579 B 123 + 456 = Math Math 789 – 579 = 210 789 -G= (Continuing) Variables (A, B, C, D, E, F, X, Y) Your calculator has eight preset variables named A, B, C, D, E, F, X, and Y. You can assign values to variables and also use the variables in calculations.
  • Page 15: Prime Factorization

    Prime Factorization In the COMP Mode, you can factor a positive integer up to 10 digits into prime factors up to three digits. To perform prime factorization on 1014 1014 = !e(FACT) When you perform prime factorization on a value that includes a factor that is prime number with more than three digits, the part that cannot be factored will be enclosed in parentheses on the display.
  • Page 16 ^, ), #, ", −1 : Powers, power roots, and reciprocals. Note ^, ), #, and " are different depending upon that the input methods for whether you are using Natural Display or Linear Display. See Note: The following functions cannot be input in consecutive sequence: .
  • Page 17 Examples s 30 )= sin 30°= 0.5 0.5 = 30° bv 1s(sin ) 0.5 )= −1 −1 wb(sinh) 1 )= 1.175201194 sinh 1 = 1.175201194 wf(cosh –1 −1 ) 1 )= cosh 1 = 0 π /2 radians = 90°, 50 grads = 45° (15( π...
  • Page 18: Statistical Calculations (Stat)

    To obtain three random three-digit integers 1000 1.(Ran#) = (Results shown here are for illustrative purposes only. Actual results will differ.) To generate random integers in the range of 1 to 6 S.(RanInt) 1 1)(,) 6 )= (Results shown here are for illustrative purposes only. Actual results will differ.) To determine the number of permutations and combinations possible when selecting four people from a group of 10 10 1*( n P r ) 4 =...
  • Page 19 ) 7(A X^B) Paired-variable (X, Y), power regression • Paired-variable (X, Y), inverse regression 8(1/X) = A + B/ Pressing any of the above keys ( 1 to 8) displays the Stat Editor. Note: When you want to change the calculation type after entering the STAT Mode, perform the key operation 11(STAT) 1(Type) to display the calculation type selection screen.
  • Page 20 Obtaining Statistical Values from Input Data To obtain statistical values, press A while in the Stat Editor and then , Σ recall the statistical variable (σ , etc.) you want. Supported statistical variables and the keys you should press to recall them are shown below. For single-variable statistical calculations, the variables marked with an asterisk (*) are available.
  • Page 21: Using Verify (Verif)

    1N(SETUP) c3(STAT) 2(OFF) 1N(SETUP) 6(Fix) 3 N2(STAT) 2(A+BX) STAT STAT 20 = 110 = 200 = 290 =ce 3150 = 7310 =8800 = 9310 = A11(STAT) 5(Reg) 3(r) = A11(STAT) 1(Type) 4(In X) A11(STAT) 5(Reg) 3(r) = A11(STAT) 5(Reg) 1(A) = A11(STAT) 5(Reg) 2(B) = Results: Linear Regression Correlation Coefficient: 0.923 Logarithmic Regression Correlation Coefficient: 0.998...
  • Page 22 2. Input 4 ' 9 = 12. 4 ! 9 e1 6 (VERIFY) 1 (=)12 • You can select the equality symbol or inequality symbol from the menu that appears when you press 16(VERIFY). 3. To verify, press =. Math Math You can input the following expressions for verification in the VERIFY Mode.
  • Page 23: Calculation Ranges, Number Of Digits, And Precision

    VERIFY Mode Calculation Examples To verify log2 log3 log4 l 2 )16 (VERIFY) 4 ( ) l 3 )16 (VERIFY) 4 ( ) l 4 )= To verify 0 – 0 16 (VERIFY) 4 ( ) 8 ' 9 ew- 8 ' 9 = To verify 5 = 25 = 625 5 w16 (VERIFY) 1 (=)
  • Page 24 9.999999999 × 10 –1 sinh 230.2585092 cosh 4.999999999 × 10 –1 sinh 4.999999999 × 10 –1 cosh 9.999999999 × 10 tanh 9.999999999 × 10 –1 –1 tanh 9.999999999 × 10 –9.999999999 × 10 99.99999999 –9.999999999 × 10 230.2585092 1 × 10 1 ×...
  • Page 25: Errors

    • Precision is basically the same as that described under “Calculation Range and Precision”, above. • !, nPr, nCr type functions require consecutive internal calculation, which can cause accumulation of errors that occur with each calculation. • Error is cumulative and tends to be large in the vicinity of a function’s singular point and inflection point.
  • Page 26: Before Assuming Malfunction Of The Calculator

    Action: • Check the input values, reduce the number of digits, and try again. • When using independent memory or a variable as the argument of a function, make sure that the memory or variable value is within the allowable range for the function.
  • Page 27: Specifications

    1. Press 1A(OFF) to turn off the calculator. Screw Screw Screw Screw 2. Remove the cover as shown in the illustration and replace the battery, taking care that its plus (+) and minus (–) ends are facing correctly. 3. Replace the cover. 4.
  • Page 28 When I execute a function calculation, why do I get a calculation result that is completely different from older CASIO calculator models? With a Natural Textbook Display model, the argument of a function that uses parentheses must be followed by a closing parenthesis. Failing to press ) after the argument to close the parentheses may cause unwanted values or expressions to be included as part of the argument.
  • Page 29 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 This mark applies in EU countries only.
  • Page 30 CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan SA1302-A Printed in China © 2013 CASIO COMPUTER CO., LTD.

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