User Manual

20090601
2-8-13
Using the Action Menu
S
impDiff
Function: Differentiates an equation or expression in implicit form with respect to a
specific variable.
Syntax: impDiff(Eq/Exp/List, independent variable, dependent variable)
Example: To find
y
’ using implicit differentiation
Menu Item: [Action][Calculation][impDiff]
Example: To find
y
’ for a list of equations
Menu Item: [Action][Calculation][impDiff]
Important!
The derivative symbol (’) cannot be used in the argument of “impDiff(”. Trying to use a
derivative symbol would result in a Wrong Argument Type error.
Example: To find
y
” given
y
’ = −
x
/
y
Menu Item: [Action][Calculation][impDiff]
S
diff
Function: Differentiates an expression with respect to a specific variable.
Syntax: diff(Exp/List[,variable] [ ) ]
diff(Exp/List,variable,order[,a] [ ) ]
• “a” is the point for which you want to determine the derivative.
• “order” = 1 when you use the following syntax: diff(Exp/List[,variable][ ) ]. The default
variable is “
x
” when “variable” is omitted.
Example: To differentiate
x
6
with respect to
x
Menu Item: [Action][Calculation][diff]
Example: To find the second derivative of
x
6
with respect to
x
Menu Item: [Action][Calculation][diff]
Example: To find the second derivative of
x
6
with respect to
x
at
x
= 3
Menu Item: [Action][Calculation][diff]