62. Tangent Planes and Linearization - Part 3 - Differentials and Approximations with Differentials

In this video, we review differentials and increments from Calculus I, and then we discuss the increment of z=f(x,y), the total differential of z=f(x,y), and approximations using the differential of z.

At the beginning of the video, I mention that I'm going to define the differentiability of a function of two variables. I decided to save that for the next video.