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Фрагмент инструкции
E-19 Function Calculations Function Calculations For actual operations using each function, see the “Examples” section following the list below. . .. : . is displayed as 3.141592654, but . = 3.14159265358980 is used for internal calculations. e : e is displayed as 2.718281828, but e = 2.71828182845904 is used for internal calculations. sin, cos, tan, sin.1, cos.1, tan.1: Trigonometric functions. Specify the angle unit before performing calculations. See 1. sinh, cosh, tanh, sinh.1, cosh.1, tanh.1: Hyperbolic functions. Input a function from the menu that appears when you press w. The angle unit setting does not affect calculations. See 2. °, r , g: These functions specify the angle unit. ° specifies degrees, r radians, and g grads. Input a function from the menu that appears when you perform the following key operation: 1G(DRG'). See 3. $, %: Exponential functions. Note that the input method is different depending upon whether you are using Natural Display or Linear Display. See 4. log: Logarithmic function. Use the l key to input logb as log (a, b). Base a 10 is the default setting if you do not input anything for a. The & key also can be used for input, but only while Natural Display is selected. In this case, you must input a value for the base. See 5. ln: Natural logarithm to base e. See 6. x2 , x3 , x^, ), #, ", x.1 : Powers, power roots, and reciprocals. Note that the input methods for x^, ), #, and " are different depending upon whether you are using Natural Display or Linear Display. See 7. Note: • The following functions cannot be input in consecutive sequence: x2 , x3 , x^, x.1. If you input 2ww, for example, the final w will be ignored. To input 222, input 2w, press the d key, and then press w(B). • x2 , x3 , x .1 can be used in complex number calculations. : Function for performing numerical integration using the Gauss-Kronrod method. Natural Display input syntax is .a b f(x), while Linear Display input syntax is .( f(x), a, b, tol). tol specifies tolerance, which becomes 1 . 10–5 when nothing is input for tol. Also see “Integration and Differential Calculation Precautions” and “Tips for Successful Integration Calculations” for more information. See 8. F: Function for approximation of the derivative based on the central d difference method. Natural Display input syntax is ( f(x)) , while x=a dx d Linear Display input syntax is ( f(x), a, tol). tol specifies tolerance, dx which becomes 1 . 10–10 when nothing is input for tol. Also see “Integration and Differential Calculation Precautions” for more information. See 9. b 8: Function that, for a specified range of f(x), determines sum . ( f(x)) x=a b = f(a) + f(a+1) + f(a+2) + ...+ f(b). Natural Display input syntax is . ( f(x)), x=a while Linear Display input syntax is .(f(x), a, b). a and b are integers that E-20 can be specified within the range of –1 . 1010 a b 1 . 1010. See 10. Note: The following cannot be used in f(x): Pol, Rec, .R. The following cannot be used in f(x), a, or b: ., d/dx, ., .. 9: Determines the product of f(x) over a given range. The calculation b formula is: ( f(x)) = f(a) . f(a+1) . f(a+2) . ... . f(b). The Natural Display x=a b input syntax is ( f(x)), while the Linear Display input syntax is (f(x), a, x=a b). a and b are integers in the range of a 1 . 1010 , b 1 . 1010 , a b. See 11. Note: The following cannot be used in f(x): Pol, Rec, .R. The following cannot be used in f(x), a, or b: ., d/dx, ., . Pol, Rec : Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. See 12. Pol(x, y) = (r, ) Rec(r, ) = (x, y) Specify the angle unit before performing calculations. The calculation result for r and and for x and y are each assigned respectively to variables X and Y. Calculation result . is displayed in the range of .180° . Rectangular Polar 180°. Coordinates (Rec) Coordinates (Pol) x ! : Factorial function. See 13. Abs : Absolute value function. Note that the input method is different depending upon whether you are using Natural Display or Linear Display. See 14. Ran# : Generates a 3-digit pseudo random number that is less than 1. The result is displayed as a fraction when Natural Display is selected. See 15. RanInt# : For input of the function of the form RanInt#(a, b), which generates a random integer within the range of a to b. See 16. nPr, nCr : Permutation (nPr) and combination (nCr) functions. See 17. Rnd : The argument of this function is made a decimal value and then rounded in accordance with the current number of display digits setting (Norm, Fix, or Sci). With Norm 1 or Norm 2, the argument is rounded off to 10 digits. With Fix and Sci, the argument is rounded off to the specified digit. When Fix 3 is the display digits setting, for example, the result of 10 . 3 is displayed as 3.333, while the calculator maintains a value of 3.33333333333333 (15 digits) internally for calculation. In the case of Rnd(10.3) = 3.333 (with Fix 3), both the d...
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