Substituting Values And Setting Constraints - Texas Instruments TI-89 Titanium User Manual

For example:
x is not simplified. The function uses x
and then substitutes 5 for x.
Note: The example to the right finds the derivative
3 3
of x at x=5. If x was initially simplified to 75, you
would find the derivative of 75, which is not what
you want.
x is simplified to t. The function uses t
x is simplified to t. The function uses t
and then substitutes 5 for t.

Substituting Values and Setting Constraints

The with operator ( | ) lets you temporarily substitute values into an expression or
" "
specify domain constraints.
Symbolic Manipulation
x cannot be simplified.
3
,
3
.
3
,
235