L'Hôpital's rule for 0/0 and ∞/∞ (L'Hôpital: 0/0 or ∞/∞ ⇒ differentiate numerator and denominator)

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L'Hôpital: 0/0 or ∞/∞ ⇒ differentiate numerator and denominator

What each symbol means

SymbolWhat it stands for
f,gDifferentiable near limit point (except possibly at point)

When to use this

Verify hypotheses; RHS limit must exist