## Relative Minimum

Press
to access the minimum option
which finds a value of a variable in the interval between a lower and
upper bound that minimizes the expression.

Next, enter an expression, the variable, a lower bound, and an upper bound
separated by commas. For example, to find the minimum value
of the expression x - x^{3} for x between -1 and 1 enter

3
1
1

The minimum value is about -0.577.