# Maclaurin Expansion of Arctan $$x$$ via L'Hôspital's Rule

by Russell Euler (Northwest Missouri State University)

This article originally appeared in:
College Mathematics Journal
September, 1993

Subject classification(s): Infinite Series
Applicable Course(s): 3.2 Mainstream Calculus II

Coefficients are obtained for the Maclaurin series for arctan $$x$$ using l'Hôpital's rule.

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