How do you evaluate the sum represented by sum_(n=1)^(10)n^210∑n=1n2 ? Calculus Introduction to Integration Sigma Notation 1 Answer Wataru Sep 21, 2014 Since sum_{k=1}^n k^2={n(n+1)(2n+1)}/{6}n∑k=1k2=n(n+1)(2n+1)6, we have sum_{n=1}^{10}n^2={(10)(11)(21)}/6=38510∑n=1n2=(10)(11)(21)6=385 Answer link Related questions How does sigma notation work? How do you use sigma notation to represent the series 1/2+1/4+1/8+…12+14+18+…? Use summation notation to express the sum? What is sigma notation for an arithmetic series with first term aa and common difference dd ? How do you evaluate the sum represented by sum_(n=1)^5n/(2n+1)5∑n=1n2n+1 ? How do you evaluate the sum represented by sum_(n=1)^(8)1/(n+1)8∑n=11n+1 ? What is sigma notation for a geometric series with first term aa and common ratio rr ? What is the value of 1/n sum_{k=1}^n e^{k/n}1nn∑k=1ekn ? Question #07873 Question #117a3 See all questions in Sigma Notation Impact of this question 5747 views around the world You can reuse this answer Creative Commons License