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Multiple Choice
Find the interval of convergence for the Maclaurin series for
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Verified step by step guidance
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Step 1: Recall that the Maclaurin series is a Taylor series centered at x = 0. To find the interval of convergence, we need to determine the values of x for which the series converges.
Step 2: Write the Maclaurin series for f(x) = tan−1(x). The series is given by: f(x) = x - x³/3 + x⁵/5 - x⁷/7 + ... This is an alternating series with terms decreasing in magnitude.
Step 3: Apply the ratio test to determine the interval of convergence. The ratio test states that a series Σaₙ converges absolutely if lim (n→∞) |aₙ₊₁/aₙ| < 1. Compute the ratio of consecutive terms for the series.
Step 4: Solve the inequality obtained from the ratio test to find the range of x values for which the series converges. This will give the interval of convergence.
Step 5: Check the endpoints of the interval separately to determine whether the series converges at x = -1 and x = 1. Use the alternating series test or direct substitution to verify convergence at these points.