Post a New Question
posted by Anonymous on Thursday, December 27, 2012 at 11:27am.
prove that mean of cubes of first n natural numbers is [n(n+1)(n+1)]/4
by induction, you can show that n ∑ k^3 = n^2 * (n+1)^2 / 4 k=1 now divide by n, and you're done.
More Related Questions