L'Hôpital's rule

L'Hôpital's rule

Procedure of differential calculus for evaluating indeterminate forms such as 0/0 and / when they result from attempting to find a limit. It states that when the limit of f(x)/g(x) is indeterminate, under certain conditions it can be obtained by evaluating the limit of the quotient of the derivatives of f and g (i.e., f(x)/g(x)). If this result is indeterminate, the procedure can be repeated. It is named for the French mathematician Guillaume de L'Hôpital (1661–1704), who purchased the formula from his teacher the Swiss mathematician Johann Bernoulli (1667–1748).

This entry comes from Encyclopædia Britannica Concise.
For the full entry on L'H{ocirc}pital's rule, visit Britannica.com.

Seen & Heard

What made you look up L'Hôpital's rule? Please tell us what you were reading, watching or discussing that led you here.

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More