Thursday, March 23, 2017

discrete mathematics - Sum of cubes proof

Prove that for any natural number n the following equality holds:




$$ (1+2+ \ldots + n)^2 = 1^3 + 2^3 + \ldots + n^3 $$



I think it has something to do with induction?

No comments:

Post a Comment

analysis - Injection, making bijection

I have injection $f \colon A \rightarrow B$ and I want to get bijection. Can I just resting codomain to $f(A)$? I know that every function i...