Question

write in sigma notation 1/1 + 1/4 +1/9 +...1/100

Answer 1

\[\Large\sum_{i=1}^{10}\frac1{i^2}\]

Answer 2

When i=1, 1/i^2 = 1/1
When i=10, 1/i^2 = 1/100

Answer 3

why is it i? o.o

Answer 4

THANK YOU SO MUCH :D

Answer 5

You can use any variable

Answer 6

ohh lol xD

Answer 7

no problem :)