First Derivative

Press to access the first derivative option which algebraically finds the first derivative of an expression with respect to a variable at a value. If the value is omitted, the current value of the variable is used.

Next, enter an expression, the variable, and a value separated by commas. For example, to find the first derivative of y = x3 at x = 2, enter

3 2

For f(x) = x3, f'(2) = 12.

Note: Unfortunately, the TI cannot differentiate some functions algebraically. For these functions use the less accurate numerical differentiation option nDer.