Learn how to choose the right infinite series test in Calculus 2. This Woody Calculus guide explains the Test for Divergence, p-test, geometric series, Limit Comparison Test, Direct Comparison Test, Ratio Test, Root Test, Integral Test, Alternating Series Test, and telescoping series.
The radius of convergence is the hidden boundary where an infinite polynomial stops behaving like a function. In this Woody Calculus visual lesson, learn how power series are built around a center, how the Ratio Test finds R, why endpoints must be tested separately, and how to find the full interval of convergence.