Solution 12045: Calculating the Numeric Derivative (nDeriv) on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
How can I calculate the numeric derivative (nDeriv) on the TI-89 family, TI-92 Plus, and Voyage 200 graphing calculators?
To find a numeric result for a derivative at a given value, use the WITH ( | ) function.
Example: To find the numeric derivative of 2x3 when x=2, enter the following:
d(2x^3,x)|x=2 (The d( ) function is accessed by pressing [2nd] .)
Both functions will return 24.
If the value of x is not specified, the symbolic derivative will be displayed.
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.