Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual page 67

Maximum/Minimum Value Calculations
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
.
Minimum Value
(CALC)*
a
( : start point of interval,
Maximum Value
(CALC)*
a
( : start point of interval,
Example To determine the minimum value for the interval defined by start
point
y
=
f x
Input ( ).
a
Input the interval = 0,
n
Input the precision
f x
• In the function ( ), only X can be used as a variable in expressions. Other variables (A
through Z excluding X,
that variable is applied during the calculation.
n
• Input of 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
the amount of time required to perform the calculation.
• The value you input for the end point of the interval (
input for the start point (
• You can interrupt an ongoing maximum/minimum calculation by pressing the
• You can input an integer in the range of 1 to 9 for the value of
range causes an error.
• You cannot use a differential, quadratic differential, integration, , maximum/minimum value,
Solve, RndFix or log
term.
f x
( ) (FMin) ( )
b
: end point of interval,
f x
( ) (FMax) ( )
b
: end point of interval,
a
= 0 and end point
x 2 x
– 4 + 9
(CALC)* ( )
b
= 3.
= 6.
r
, ) are treated as constants, and the value currently assigned to
n
increases the precision of the calculation, but it also increases
a
). Otherwise an error occurs.
b calculation expression inside of a maximum/minimum calculation
a
[OPTN]-[CALC]-[FMin]/[FMax]
a b n
n n
: precision (
a b n
n n
: precision (
b
= 3, with a precision of
(FMin)
b
) must be greater than the value you
n
2-29
II
* fx-7400G :
= 1 to 9))
II
* fx-7400G :
= 1 to 9))
n
= 6 for the function
II
* fx-7400G :
key.
. Using any value outside this
(CALC)
(CALC)
(CALC)