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

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

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

maths 
Damon
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