Math 166

Fall 2000

Exam 3

 

 

1.       (15 pt) Determine if the following sequences converge or diverge, if the sequence converges, then find the limit:

a)          b)            

c) where

2.       (12 pt) Consider the sequence where  is the nth partial sum of the series

a)      Find all values of  p for which the sequence converges (and state why).

b)      Find all values of  p for which the sequence does not converge to 0 (and state why).

 

3.       (36 pt) Determine if the following series converge or diverge:

a)            b)                         c)

 

d)                      e)             f)

 

4.       (12 pt) For this problem consider the two convergent series

a)      How big must you choose n to guarantee that the approximation sn for the series has error less than or equal to .01?

b)      How big must you choose n to guarantee that the approximation sn for the series has error less than or equal to .01?

5.       (10 pt) Find the center, radius, and interval of convergence of the power series

6.       (9 pt) Suppose that if you expand the function  in a power series about c, is equal to its power series on the interval (0,c). Also assume that has a vertical asymptote at 0. Suppose you expand in a Taylor series centered at 1. Determine if you can use this series to estimate the following in general:  Why or why not?

7.       (8 pt) Evaluate the integral with error less than .001.

8.      (8 pt) Find a series for  about What is the radius of convergence of this series?