Question

An=(((-1)^(n)(n))/((n^2-5n-3)) can someone help me solve to find what L is for the Ratio test? i have been trying to solve and think I'm only slight off

Answer 1

Reformatting: \[A_n = \frac{(-1)^n \cdot n}{n^2 - 5n - 3}\]

Answer 2

I am getting -1

Answer 3

or after taking the abs value, | -1| = 1

Answer 4

okay great i forgot the abs sign so i had -1

Answer 5

thanks!!!

Answer 6

could you also help me with (-1)^(n+1)(11^(n-1))/((n+7)^6(10^(n+2)) for L

Answer 7

here is a good reason to use the equation editor. (button on the lower left) of the input box.

Answer 8

where is it?

Answer 9

thanks again or your help