Symbolic Manipulation 257
For Information about Creating a User-Defined Function
Refer to:
• “Creating and Evaluating User-Defined Functions” in the Calculator Home Screen
module.
• “Graphing a Function Defined on the Home Screen” and “Graphing a Piecewise
Defined Function” in the Calculator Home Screen module.
• “Overview of Entering a Function” in the Programming module.
Undefined Functions
You can use functions such as
f(x), g(t), r(q), etc., that have not been assigned a
definition. These “undefined” functions yield symbolic results. For example:
Single-Statement Functions
You can use user-defined functions consisting of a single expression. For example:
Use
DelVar to ensure that f(x) and g(x) are not
defined.
Then find the derivative of
f(x)g(x) with
respect to x.
Note: To select d from the Calc toolbar menu,
press … 1 (or press 2= on the keyboard).
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