In problems 13 - 26, use whichever Convegence/Divergence Theorem is appropriate to determine if the given series converges or not. Present an argument as you write your solution. (-1)n 13. n ln n 14. In problems 3 - 8, find a Taylor series representation for the following functions centered at the given value of a. (Use the known series - do not make a table) 3. f ( x ) =_ 4 . f (x ) = x+1 5 - x a = 3 a =-1 2x+5 5 . f ( x ) = 2e2x a = 0 6. X f (x) = xcosx a=0