2-8-15

Using the Action Menu

ulim

Function: Determines the limit of an expression.

Syntax: lim (Exp/List, variable, point [,direction] [ ) ]

Example: To determine the limit of e xas x approaches

Menu Item: [Action][Calculation][lim]

Example: To determine the limit of 1/x as x approaches 0 from the right

Menu Item: [Action][Calculation][lim]

Example: To determine the limit of 1/x as x approaches 0 from the left

Menu Item: [Action][Calculation][lim]

This function returns the limit from the left when “direction” < 0, the limit from the right when “direction” > 0, and the limit from both sides (left and right) when “direction” = 0 or when the direction is omitted.

uΣ

Function: Evaluates an expression at discrete variable values within a range, and then calculates a sum.

Syntax: Σ(Exp/List, variable, lower value, upper value [ ) ]

Example: To calculate the sum of x2 as the value of x changes from x = 1 through x =10.

Menu Item: [Action][Calculation][Σ]

uΠ

Function: Evaluates an expression at discrete variable values within a range, and then calculates a product.

Syntax: Π(Exp/List, variable, lower value, upper value [ ) ]

Example: To calculate the product of x2 as the value of x changes from x = 1 through x = 5

Menu Item: [Action][Calculation][Π]

20080201