Casio FX-9750GII-SC User Guide - Page 67

I Maximum/Minimum Value Calculations [OPTN]-[CALC]-[FMin]/[FMax] After displaying the function analysis menu, you can input maximum/minimum calculations using the formats below, and solve for the maximum and minimum of a function within interval a  x  b. S Minimum Value *(CALC)* (E)(FMin) f (x)  a  b  n  * fx-7400GII: (CALC) (a: start point of interval, b: end point of interval, n: precision (n = 1 to 9)) S Maximum Value *(CALC)* (E)(FMax) f (x) a  b  n  * fx-7400GII: (CALC) (a: start point of interval, b: end point of interval, n: precision (n = 1 to 9)) Example Input f (x). To determine the minimum value for the interval defined by start point a = 0 and end point b = 3, with a precision of n = 6 for the function y = x2 - 4x + 9 *(CALC)* (E)(FMin)TV CT H * fx-7400GII: (CALC) Input the interval a = 0, b = 3. ?B Input the precision n = 6. EU • In the function f (x), only X can be used as a variable in expressions. Other variables (A through Z excluding X, r, Ƨ) are treated as constants, and the value currently assigned to that variable is applied during the calculation. • Input of n and the closing parenthesis can be omitted. • Discontinuous points or sections with drastic fluctuation can adversely affect precision or even cause an error. • Inputting a larger value for n increases the precision of the calculation, but it also increases the amount of time required to perform the calculation. • The value you input for the end point of the interval (b) must be greater than the value you input for the start point (a). Otherwise an error occurs. • You can interrupt an ongoing maximum/minimum calculation by pressing the key. • You can input an integer in the range of 1 to 9 for the value of n. Using any value outside this range causes an error. • You cannot use a differential, quadratic differential, integration, 3, maximum/minimum value, Solve, RndFix or logab calculation expression inside of a maximum/minimum calculation term. 2-29