What is math?

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What is type of sign ∑?

Guest May 19, 2015

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Best Answer

$$\sum$$ is the greek letter Capital Sigma

In mathematics it means 'sum of'

for example

$$\\\displaystyle \sum_{n=2}^5\;n\;\;=2+3+4+5=14\\\\\\
\displaystyle \sum_{n=1}^5\;4n\;\;=4*1+4*2+4*3+4*4+4*5=4+8+12+16+20 =60\\\\$$

Melody May 19, 2015

Melody · Answer 1 · 2015-05-19T12:12:19

$$\sum$$ is the greek letter Capital Sigma

In mathematics it means 'sum of'

for example

$$\\\displaystyle \sum_{n=2}^5\;n\;\;=2+3+4+5=14\\\\\\
\displaystyle \sum_{n=1}^5\;4n\;\;=4*1+4*2+4*3+4*4+4*5=4+8+12+16+20 =60\\\\$$

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