User manual CASIO FX-83MS

[. . . ] fx-82MS fx-83MS fx-85MS fx-270MS fx-300MS fx-350MS User's Guide E http://world. casio. com/edu/ CASIO ELECTRONICS CO. , LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U. K. Removing and Replacing the Calculator's Cover · Before starting . . . . . 1 Holding the cover as shown in the illustration, slide the unit out of the cover. · After you are finished . . . . . 2 Holding the cover as shown in the illustration, slide the unit out of the cover. · Always slide the keyboard end of the unit into the cover first. [. . . ] 200 \ 7 = (Internal rounding) 28. 57100 28. 57100 399. 99400 AQ - 14 = · Press F . . . . . · Example 2: 1 Ö 3, displaying result with two significant digits (Sci 2) F. . . . . E-15 Memory Calculations COMP Use the F key to enter the COMP Mode when you want to perform a calculation using memory. F 1 k Answer Memory · Whenever you press = after inputting values or an expression, the calculated result automatically updates Answer Memory contents by storing the result. · In addition to =, Answer Memory contents are also updated with result whenever you press A v, |, A {, or A j followed by a letter (A through F, or M, X, or Y). · Answer Memory can store up to 12 digits for the mantissa and two digits for the exponent. · Answer Memory contents are not updated if the operation performed by any of the above key operations results in an error. k Consecutive Calculations · You can use the calculation result that is currently on the display (and also stored in Answer Memory) as the first value of your next calculation. Note that pressing an operator key while a result is displayed causes the displayed value to change to Ans, indicating it is the value that is currently stored in Answer Memory. · The result of a calculation can also be used with a subsequent Type A function (x2, x3, x­1, x!, DRG'), +, ­, ^(xy), x , , Ö, nPr and nCr. k Independent Memory · Values can be input directly into memory, added to memory, or subtracted from memory. E-16 · Example: 23 53 ) 45 9 6 2 32 47 90 ­11 23 + 9 A j 3 (M+) 53 , 6 | 45 - 2 A { (Total) 0 3 (M+) k Variables · There are nine variables (A through F, M, X and Y), which can be used to store data, constants, results, and other values. · Use the following operation to delete data assigned to a particular variable: 0 A j 1. · Perform the following key operation when you want to clear the values assigned to all of the variables. A B 1(Mcl) = · Example: 193. 2 Ö 23 193. 2 Ö 28 8. 4 6. 9 193. 2 A j 1 \ 23 = p 1 \ 28 = Scientific Function Calculations COMP Use the F key to enter the COMP Mode when you want to perform scientific function calculations. F 1 · Certain types of calculations may take a long time to complete. · Wait for the result to appear on the display before starting the next calculation. · = 3. 14159265359 E-17 k Trigonometric/Inverse Trigonometric Functions · To change the default angle unit (degrees, radians, grads), press the F key a number of times until you reach the angle unit setup screen shown below. Deg Rad G r a 1 2 3 · Press the number key (1, 2, or 3) that corresponds to the angle unit you want to use. (90° = 2 radians = 100 grads) · Example 1: sin 63°52o41 0. 897859012 q . . . . . 1 (Deg) S 63 I 52 I 41 I = · Example 2: cos ( rad) 3 q . . . . . 2 (Rad) q 0. 5 · Example 3 : cos 1 2 2 ( AVRL2\2T=g\Ax= · Example 4: tan 1 0. 741 36. 53844577 ° q . . . . . 1 (Deg) A g 0. 741 = k Hyperbolic/Inverse Hyperbolic Functions · Example 1: sinh 3. 6 · Example 2: sinh 1 18. 28545536 4. 094622224 M S 3. 6 = M A j 30 = 30 E-18 k Common and Natural Logarithms/ Antilogarithms · Example 1: log 1. 23 0. 089905111 R 1. 23 = T 90 = TpP= A U 10 = A Q 1. 5 = 2WD3= · Example 2: In 90 (= loge 90) = 4. 49980967 ln e · Example 3: e10 · Example 4: 10 · Example 5: 2 1. 5 1 22026. 46579 31. 6227766 0. 125 16 3 · Example 6: ( 2)4 RD2TW4= · Negative values inside of calculations must be enclosed within parentheses. For details, see "Order of Operations. " k Square Roots, Cube Roots, Roots, Squares, Cubes, Reciprocals, Factorials, Random Numbers, , and Permutation/Combination · Example 1: 3 2 3 3 5 5. 287196909 L2+L3-L5= · Example 2: 5 27 1 ­1. 290024053 A D 5 + A D R D 27 T = · Example 3: 7 123 ( = 123 7 ) 1. 988647795 7 A H 123 = · Example 4: 123 · Example 5: 123 · Example 6: 1 1 3 30 2 1023 123 + 30 K = 12 N = 1728 1 4 12 R3a, 4aTa= 8Af= · Example 7: 8! 40320 E-19 · Example 8: To generate a random number between 0. 000 and 0. 999 AM= · Example 9: 3 0. 66400 3Ax= (The above value is a sample only. Results differ each time. ) 9. 424777961 · Example 10: To determine how many different 4-digit values can be produced using the numbers 1 through 7 · Numbers cannot be duplicated within the same 4-digit (840) value (1234 is allowed, but 1123 is not). 7Am4= · Example 11: To determine how many different 4-member groups can be organized in a group of 10 individuals (210) 10 n 4 = k Angle Unit Conversion · Press A v to display the following menu. D R G 123 · Pressing 1, 2, or 3 converts the displayed value to the corresponding angle unit. [. . . ] GRA Same as sinx, except when x = (2n-1) 100. sin­1x cos­1x tan­1x sinhx coshx 0 0 0 x x x 1 9. 999999999 1099 230. 2585092 x 4. 999999999 1099 x 4. 999999999 1099 tanhx 0 x 9. 999999999 1099 tanh­1x 0 x 9. 999999999 10­1 logx/lnx 0 x 9. 999999999 1099 10x ­9. 999999999 1099 x 99. 99999999 ex ­9. 999999999 1099 x 230. 2585092 x 0 x 1 10100 x2 x 1 1050 1/x x 1 10100 ; x G 0 3 x x 1 10100 x!0 x 69 (x is an integer) 0 n 1 1010, 0 r n (n, r are integers) cosh­1x 1 nPr 1 {n!/(n­r)!} 1 10100 E-32 sinh­1x 0 Functions Input Range 0 1 nCr n 1 1010, 0 r n (n, r are integers) [n!/{r!(n­r)!}] 1 10100 49 Pol(x, y) x , y 9. 999999999 10 (x2+y2) 9. 999999999 1099 99 Rec(r, ) 0 r 9. 999999999 10 : Same as sinx a , b, c 1 10100 °' " 0 b, c x 1 10100 Decimal Sexagesimal Conversions 0°0°0° x 999999°59° x0: ­1 10100ylogx100 ^(xy) x 0: y0 1 x0: y n, 2n+1 (n is an integer) However: ­1 10100 ylog x 100 y0: x G 0 x ­1 101001/x logy100 y y 0: x0 1 y0: x 2n 1, n (n G 0; n is an integer) However: ­1 10100 1/x log y 100 Total of integer, numerator, and denominator must be 10 digits or less (including division marks). a b/c SD (REG) x 1 1050 y 1 1050 n 1 10100 x n, y n, o, p : n G 0 x n­1, y n­1, A, B, r : n G 0, 1 * For a single calculation, calculation error is ±1 at the 10th digit. (In the case of exponential display, calculation error is ±1 at the last significant digit. ) Errors are cumulative in the case of consecutive calculations, which can also cause them to become large. (This is also true of internal consecutive calculations that are performed 3 x , nPr, nCr, etc. ) in the case of ^(x y), y , x!, In the vicinity of a function's singular point and point of inflection, errors are cumulative and may become large. [. . . ]