# 20 Handy Derivatives for Calculus

These derivatives are helpful for finding things like velocity, acceleration, *and* the slope of a curve — and for finding maximum and minimum values (optimization) when you’re dealing with differential calculus.

**Product rule****:**

**Quotient rule:**

**List of**** 20**** handy derivatives:**

** Note:** Where

*c*is a constant

** Note:** Where

*c*is a constant

** Note:** Where

*a*is a constant