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MAT 127- Practice Exam 1-Fall 2016
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MAT 127- Practice Exam 1-Fall 2016 NAME: Each numbered question is worth 25 points. SHOW ALL WORK! 1. Determine if each converges or diverges and justify: a) 1 X ne n2 n=1 b) 1 X 3 n2 +1 n=1 1 c) 1 X (ln n)2 n n=2 d) 1 X 1 Arc tan n n=1 e) 1 X 1 p 4 5 n n=1 2 2. Find the interval of convergence and corresponding sum: 1 X n=0 3 (4x)n (3)n 3. Find the sum: 1 X 1 + ( n2 +4n+3 1 3n ) n=1 4 4) Determine if the following sequences converge and justify your answer: an = ln(n + 1) ln(2n + 1) bn = ln n ln(n + 4) cn = (1)n 5 ( 1)n