Overview

l'Hôpital's rule


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A rule for evaluating indeterminate forms. One form of the rule is the following:

Theorem

Suppose that f(x) → 0 and g(x) → 0 as x → a. Then if the limit on the right-hand side exists.

For example,The result also holds if f(x) → ∞ and g(x) → ∞ as xa. Moreover, the results apply if ‘ xa ’ is replaced by ‘ x →+∞’ or ‘ x →−∞’.

Subjects: Mathematics.


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