Question

how do i write the sigma notation for sequences of fractions?

Answer 1

i've got 1/2 + 2/3 + 3/4 + 4/5 + ...

Answer 2

try
\[\sum\frac{k}{k+1}\]

Answer 3

GUH.

Answer 4

of course there are many ways to do it. i was starting at k = 1, i.e.
\[\sum_{k=1}^n\frac{k}{k+1}\]

Answer 5

ah, so because of the ... it doesn't terminate, right. so hence the n above sigma?

Answer 6

but you could start elsewhere for example
\[\sum_{k=0}^n\frac{k+1}{k+2}\]or what ever you choose.

Answer 7

what is your last term? do you have one?

Answer 8

no if you put an "n" up top, it ends at the nth term. if it doesn't end you put infinity up top

Answer 9

no last term, just ... after that plus, as written above