20060301
2-8-45
Using the Action Menu
u
eliminate
Function: Solves one equation with respect to a variable, and then replaces the same
variable in another expression with the obtained result.
Syntax: eliminate (Eq/Ineq/List-1, variable, Eq-2 [
)
]
• Ineq (inequality) includes the “
≠
” (not equal to) relational operator.
Example: To transform
y
= 2
x
+ 3 to
x
=, and substitute the result into 2
x
+ 3
y
= 5
Menu Item: [Action][Equation/Inequality][eliminate]
u
absExpand
Function: Divides an absolute value expression into formulas without absolute value.
Syntax: absExpand (Eq/Ineq [
)
]
• Ineq (inequality) includes the “
≠
” (not equal to) relational operator.
Example: To remove the absolute value from
2
x
– 3
= 9
Menu Item: [Action][Equation/Inequality][absExpand]
u
andConnect
Function: Combines two equations or inequalities into a single expression.
Syntax: andConnect (Eq/Ineq-1, Eq/Ineq-2 [
)
]
• Ineq (inequality) includes the “
≠
” (not equal to) relational operator.
Example: To rewrite
x
> –1 and
x
< 3 into a single inequality
Menu Item: [Action][Equation/Inequality][andConnect]
u
getRight
Function: Extracts the right-side elements of an equation or inequality.
Syntax: getRight (Eq/Ineq/List [
)
]
• Ineq (inequality) includes the “
≠
” (not equal to) relational operator.
Example: To extract the right side elements of
y
= 2
x
2
+ 3
x
+ 5
Menu Item: [Action][Equation/Inequality][getRight]
u
getLeft
Function: Extracts the left-side elements of an equation or inequality.
Syntax: getLeft (Eq/Ineq/List [
)
]
• Ineq (inequality) includes the “
≠
” (not equal to) relational operator.
Example: To extract the left side elements of
y
= 2
x
2
+ 3
x
+ 5
Menu Item: [Action][Equation/Inequality][getLeft]
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