User guide

4.3 Evaluation of a defined function
Once a function has been defined you may call to the function for evaluation,
simplification, or complete operations on a given function. This section is
written assuming previous knowledge with solve. For a more detailed de-
scription of the solve command, refer to subsection 3.1.4. Evaluate f(−2)
for f(x) = x
2
− 16.
4.4 Simplification of a defined function
Simplify f(a) for f(x) = x
2
− 16 or something more interesting like expand
f(a − 1).
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