i'm looking at this problem online, and i don't understand how they came up with the answer.
Visual Calculus - Series - 12
so when they add 1, how does (2n-1) turn into (2n+1)? wouldn't the -1 and +1 cancel out, and it'd just be 2n?
i'm looking at this problem online, and i don't understand how they came up with the answer.
Visual Calculus - Series - 12
so when they add 1, how does (2n-1) turn into (2n+1)? wouldn't the -1 and +1 cancel out, and it'd just be 2n?