Calculus 3 Lesson 49: Directional Derivatives

Hi there! Today I have released Lesson 49 of my Calculus 3 series. In this lesson we learn about directional derivatives!

In particular you will learn about:

1. What is a directional derivative?
2. The limit definition of a directional derivative
3. The shortcut formula for finding a directional derivative using partial derivatives and a unit vector

I hope you enjoy this new lesson for Calculus 3! Next time we will expand upon directional derivatives with a concept known as "the gradient."

Until next time, 

— Josh