Education Technology

Solution 34918: Calculating Derivatives on the TI-84 Plus C Silver Edition.

How can I calculate derivatives on a TI-84 Plus C Silver Edition?

The TI-84 Plus C Silver Edition can only calculate numeric derivatives. Please refer to the example below.

Example: Find the numeric derivative of f(x)=x² at x=2

Using MATHPRINT Mode:

1) Press [MATH].
2) Press [↓] until 8:nDeriv( is selected and press [ENTER].



3) Press [X,T,θ,n] [X,T,θ,n] [x²] [→] [2] [ENTER].



Using CLASSIC mode:

1) Press [MATH].
2) Press [↓] until 8:nDeriv( is selected and press [ENTER].
3) Press [X,T,θ,n] [x²] [,] [X,T,θ,n] [,] [2] [)] [ENTER].



Please Note: The TI-84 Plus C Silver Edition does not have symbolic manipulation capabilities. It cannot find the symbolic derivative of a function. The following current TI graphing calculators have the Computer Algebraic System (CAS) which allows them to perform symbolic derivatives: TI-89 Titanium, Voyage™ 200 , TI-Nspire™ CAS, and the TI-Nspire CX CAS.

Please see the TI-84 Plus C Silver Edition guidebook for additional information.