Approximating ln Consider the following three ways to
Chapter 9, Problem 63(choose chapter or problem)
Approximating ln Consider the following three ways to approximate ln 2. a. Use the Taylor series for ln 11 + x2 centered at 0 and evaluate it at x = 1 (convergence was asserted in Table 9.5). Write the resulting infinite series. b. Use the Taylor series for ln 11 - x2 centered at 0 and the identity ln 2 = -ln 1 2 . Write the resulting infinite series. c. Use the property ln 1a>b2 = ln a - ln b and the series of parts (a) and (b) to find the Taylor series for f 1x2 = ln a 1 + x 1 - x b centered at 0. d. At what value of x should the series in part (c) be evaluated to approximate ln 2? Write the resulting infinite series for ln 2. e. Using four terms of the series, which of the three series derived in parts (a)(d) gives the best approximation to ln 2? Can you explain why?
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