This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Chapter 2 – Question 1
Prove that
$$1^2 + 2^2 + \cdots + n^2 = \frac{n(n + 1)(2n + 1)}{6}$$ for $n \in \mathbb{N}$.
This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Prove that
$$1^2 + 2^2 + \cdots + n^2 = \frac{n(n + 1)(2n + 1)}{6}$$ for $n \in \mathbb{N}$.