# 19 - Implicit Differentiation

How do we use implicit differentiation to find the derivative of a function?

**Homework: ** 2.5 # 3,5,11,29,35,47

**Vocabulary:** Implicit form, Explicit form

**Study Questions:**

- What do we mean when we say that a function is defined implicitly by some equation?
- Why do we often need (x,y) instead of just the x-coordinate to discuss the derivative at a point in implicit differentiation?