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K maximum/minimum value calculations – Casio FX-CG10 User Manual

Page 79

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• Input integers only for the initial term (

α ) of sequence

a

k

and last term (

β ) of sequence

a

k

.

• Input of

n

and the closing parentheses can be omitted. If you omit

n

, the calculator

automatically uses

n

= 1.

• Make sure that the value used as the final term

β is greater than the value used as the initial

term

α . Otherwise, an error will occur.

• To interrupt an ongoing

Σ calculation (indicated when the cursor is not on the display), press

the

A key.

• You cannot use a first derivative, second derivative, integration,

Σ , maximum/minimum value,

Solve or RndFix calculation expression inside of a

Σ calculation term.

• In the Math input/output mode, the distance between partitions (

n

) is fixed at 1 and cannot be

changed.

k 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

.

u Minimum Value

K4(CALC) 6( g) 1(FMin)

f

(

x

) ,

a

,

b

,

n

)

(

a

: start point of interval,

b

: end point of interval,

n

: precision (

n

= 1 to 9))

u Maximum Value

K4(CALC) 6( g) 2(FMax)

f

(

x

) ,

a

,

b

,

n

)

(

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

=

x

2

– 4

x

+ 9

Input

f

(

x

).

AK4(CALC) 6( g) 1(FMin) vx-ev+j,

Input the interval

a

= 0,

b

= 3.

a,d,

Input the precision

n

= 6.

g)

w

• In the function

f

(

x

), only X can be used as a variable in expressions. Other variables (A

through Z excluding X,

r

,

) are treated as constants, and the value currently assigned to

that variable is applied during the calculation.

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