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Using the Action Menu

SfMax

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 x2+ 1 with respect to x

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

Example: To find the maximum point of x2+ 1, when 2 x 5

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

Example: To find the maximum point of x3 – 6x with respect to x, when –2 x 2 and n = 1

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

Sgcd

Function: Returns the greatest common denominator of two expressions.

Syntax: gcd (Exp/List-1, Exp/List-2 [ ) ]

Example: To obtain the greatest common denominator of x + 1 and x2 – 3x – 4

Menu Item: [Action][Calculation][gcd]

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