MATH 1120 Midterm: MATH 1120 Cornell WARMUP2018 Exam Winter 5 3 18Solutions

NAME:. MATH 152 Dr. Z. , Post-Exam Practice for Exam II; Practice 1 (For people who scored less than 70 in Exam II and stl wish to be eligible for the "deal") 1. (10 points 5 each]) For each of the two series below, determine whether they converge or diverge oC 0O (a) Σ(-3)" (b) 5n8+6n4+8 , n= n=1

3) Determine if the following series converge or diverge. You need to clearly state which test you are using, and show all of your work. n=1 n2+2 n=1(2n)!(n-1): oo C-1)n+1 noto series le3 COnvero f) -1n+1 (use Divergence Test, limn+1 = 1ヂ0so series diverges) oo Inn

) Find the exact sum of the series, if possible. Σ.3 ) Determine if the following series converge or diverge. using, and show all of your work. 3n 72 c) 1(2n)!(n-1). C-1)n+i oo cos(nn) f) Σ 1nti ( n+1 use Divergence Test, lim--= 1 oo Inn Determine whether the series is absolutely conven