# maths

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express [3/7]+[4/8]+[5/9]+[6/10] in sigma notion.

• maths -

sigma from x = 3 to x = 6 of [ x/(x+4) ]

• maths -

how did you find that equation ? it there a general formula for that ?

• maths -

Nope, just look at it
on top
3,4,5, 6
=2, 3+1 etc

on bottom
7,8,9,10
= 7, 7+1 etc

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