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Casio ClassPad 300 PLUS User Manual

Page 141

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20050501

2-7-12

Using the Action Menu

u

u

u

u

u fMax

Function: Returns the maximum point in a specific range of a function.

Syntax: fMax(Exp[,variable] [ ) ]

fMax(Exp,variable,start value,end value[,

n

] [ ) ]

• “

x

” is the default when you omit “[,variable]”.

• Negative infinity and positive infinity are the default when the syntax fMax (Exp [,

variable] [ ) ] is used.

• “

n

” is calculation precision, which you can specify as an integer in the range of 1 to 9.

Using any value outside this range causes an error.

• This command returns an approximate value when calculation precision is specified for

n

”.

• This command returns a true value when nothing is specified for “

n

”. If the true value

cannot be obtained, however, this command returns an approximate value along with

n

= 4.

• Discontinuous points or sections that fluctuate widely can adversely affect precision or

even cause an error.

• Inputting a larger number 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 must be greater than the value you

input for the start point. Otherwise an error occurs.

Example: To find the maximum point of –

x

2

+ 1 with respect to

x

Menu Item: [Action][Calculation][fMax]

Example: To find the maximum point of –

x

2

+ 1, when 2 <

x

< 5

Menu Item: [Action][Calculation][fMax]

Example: To find the maximum point of

x

3

– 6

x

with respect to

x

,

when –2 <

x

< 2 and

n

= 1

Menu Item: [Action][Calculation][fMax]