User manual CASIO FX-570ES

[. . . ] E fx-570ES User's Guide http://world. casio. com/edu/ RCA502107-001V01 CASIO Europe GmbH Bornbarch 10, 22848 Norderstedt, Germany About this Manual · The MATH mark indicates an example that uses Math format, while the LINE mark indicates Linear format. For details about input/output formats, see "Specifying the Input/Output Format". · Keycap markings indicate what a key inputs or what function it performs. · Pressing the 1 or S key followed by a second key performs the alternate function of the second key. [. . . ] · (, d/dx(, Pol(, Rec(, and ( cannot be used within f(x), a, or tol. · Differential calculations can be performed in the COMP Mode only. · When performing a differential calculation involving trigonometric functions, specify Rad as the calculator's default angle unit. · A "Time Out" error occurs when a differential calculation ends without the ending condition being fulfilled. · A smaller tol value provides better precision, but it also causes the calculation to take more time. Specify a tol value that is 1 × 10­14 or greater. · You cannot input a tol value when using Math format. · Inaccurate results and errors can be caused by the following : - discontinuous points in x values - extreme changes in x values - inclusion of the local maximum point and local minimum point in x values - inclusion of the inflection point in x values - inclusion of undifferentiable points in x values - differential calculation results approaching zero · Pressing A will interrupt an ongoing differential calculation. Appendix <#033> Determine f '( ) when f(x) = sin(x) 2 (tol specification omitted. ) <#034> d (3x2 ­ 5x + 2, 2, 1×10­12) = 7 dx E-36 With (, you can obtain the sum of an input f(x) expression for a specific range. calculations are performed using the following formula. k Calculations ( f(x), a, b) = f(a) + f(a + 1) + . . . . + f(b) f(x): Function of X (All non-X variables are treated as a: b: constants. ) Calculation range start point Calculation range end point · a and b are integers in the range of ­1 × 10 10 < a < b < 1 × 1010. · The calculation step is fixed at 1. · (, d/dx(, Pol(, Rec(, and ( cannot be used within f(x), a, or b. · Pressing A will interrupt an ongoing calculation. Appendix <#035> (X + 1, 1, 5) = 20 k Rectangular-Polar Coordinate Conversion Rectangular Coordinates (Rec) Polar Coordinates (Pol) · Coordinate conversion can be performed in the COMP, STAT, MATRIX, and VECTOR calculation modes. Converting to Polar Coordinates (Pol) Pol(X, Y) X: Specifies the rectangular coordinate X value Y: Specifies the rectangular coordinate Y value · Calculation result is displayed in the range of ­180° < < 180°. · Calculation result is displayed using the calculator's default angle unit. · Calculation result r is assigned to variable X, while is assigned to Y. Converting to Rectangular Coordinates (Rec) Rec(r, ) r : Specifies r value of polar coordinate : Specifies value of polar coordinate · Input value is treated as an angle value, in accordance with the calculator's default angle unit setting. · Calculation result x is assigned to variable X, while y is assigned to Y. E-37 · If you perform coordinate conversion inside of an expression instead of a stand-alone operation, the calculation is performed using only the first value (either the r-value or the X-value) produced by the conversion. Example: Pol (' ' + 5 = 2 + 5 = 7 2, 2) Appendix <#036> to <#037> k Other Functions This section explains how to use the functions shown below. !, Abs(, Ran#, nPr, nCr, Rnd( · These functions can be used in the same modes as the trigonometric functions. [. . . ] · Action · Check for errors in the equation that you input. · Input a value for the solution variable that is close to the expected solution and try again. Insufficient MEM Error · Cause · There is not enough memory to perform your calculation. · Action · Narrow the table calculation range by changing the Start, End, and Step values, and try again. Time Out Error · Cause · The current differential or integration calculation ends without the ending condition being fulfilled. · Action · Try increasing the tol value. [. . . ]