- #1
lha08
- 164
- 0
Homework Statement
In one of my problems, I'm asked to use integral test in order to determine whether the following function is converging or diverging:
(summation from n=1 to inf) 1/(n^2-4n-5)
I was just wondering how do we know if function is positive, continuous and decreasing because when i tried to see if it was positive (i plugged in a value), i got a negative...
Also, for a integral test, does the entire function have to be decreasing?