IMaximum/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.SMinimum 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))

SMaximum 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

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

Input f (x).

*(CALC)* (E)(FMin)TV CTH

* 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.

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