Directional Derivatives using the TiNspire CX – Step by Step

It is straightforward to find Directional Derivatives using the TiNspire CX : just launch Calculus Made Easy at www.tinspireapps.com , select

Directional Derivative in the menu as shown below :

Next enter the given function and the 2 points as shown below:

Scroll down in bottom window to find the directional derivative with all its steps