I don't know how to solve this, can someone help as soon as possible? Thank you!
Compute the sum:
The denominators follow this pattern: n^3 + 3n^2 + 2n. Therefore they all sum up to:
∑[ 2 / ( n^3 + 3 n^2 + 2 n), n, 1, 1,000,000] = 1/2.
Thank you so much!