# L'Hospital's Rule*

- First important thing about L'Hospital's rule is how to pronounce it. "L'Hospital" is pronounced "low pea tall". The rule uses derivatives to help evaluate limits involving indeterminate forms.
- Application (or repeated application) of the rule often converts an indeterminate form to a simpler expression that can be evaluated by substitution.
- L'Hospital's rule states that for functions
*f*and*g*which are differentiable on an open interval*I*except possibly at a point*c*contained in*I*, if...

## Essential Questions

Essential Questions

### How can L'Hospital's Rule be used to evaluate limits?

How can L'Hospital's Rule be used to evaluate limits?