Q3: A. By power series, prove that: d Cosx = -sinx dx B. Find the value of x for which Inx + (Inx)² + (lnx)3 + (lnx)* + -.. = 9

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 50E
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Q3: A. By power series, prove
d
Cosx = -sinx
dx
that:
B. Find the value of x for which Inx + (Inx)? + (Inx)3 + (lnx)* + ... = 9
Transcribed Image Text:Q3: A. By power series, prove d Cosx = -sinx dx that: B. Find the value of x for which Inx + (Inx)? + (Inx)3 + (lnx)* + ... = 9
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