20021201
2-7-6
Using the Action Menu
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combine
Function: Transforms multiple fractions into their common denominator equivalents and
reduces them, if possible.
Syntax: combine (Exp/Eq/Ineq/List/Mat [ ) ]
• Ineq (inequality) includes the “
⫽
” (not equal to) relational operator.
Example: To transform and reduce (
x
+ 1)/(
x
+ 2) +
x
(
x
+ 3)
Menu Item: [Action][Transformation][combine]
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collect
Function: Rearranges an expression with respect to a specific variable.
Syntax: collect (Exp/Eq/Ineq/List/Mat [,Exp] [ ) ]
• Ineq (inequality) includes the “
⫽
” (not equal to) relational operator.
Example: To rearrange
x
2
+ a
x
+ b
x
with respect to
x
Menu Item: [Action][Transformation][collect]
• “
x
” is the default when you omit “[,Exp]”.
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invert
Function: Inverts two variables in an expression.
Syntax: invert (Exp/Eq/Ineq/List [,variable-1, variable-2] [ ) ]
• Ineq (inequality) includes the “
⫽
” (not equal to) relational operator.
Example: To invert
x
and
y
in the expression 2
x
=
y
Menu Item: [Action][Transformation][invert]
•
x
and
y
are inverted when variables are not specified.
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tExpand
Function: Employs the sum and difference formulas to expand a trigonometric function.
Syntax: tExpand(Exp/Eq/Ineq/List/Mat [ ) ]
• Ineq (inequality) includes the “
⫽
” (not equal to) relational operator.
Example: To expand sin (a + b)
Menu Item: [Action][Transformation][tExpand]
