L'Hôpital's rule

L'Hôpital's rule is a mathematical rule that can calculate limits of an indeterminate form using derivatives. When the rule is used (it can be used multiple times), it turns an indeterminate form into a value that can be solved. 

L'Hôpital's rule states that for functions  and  which are continuous over an interval, if  and  and exists, then

When the rule is used, it usually simplifies the limit or changes it to a limit that can be solved.

Category:Calculus