Quote:
Originally Posted by roger
How is a summation expressed when the increment from one value in an expression to another is greater than one?
For example, if I wanted the summation of a seried with the increment of the variable values being two, would I have to write earlier in the expression: let [variable] = 2*x ?
I don't know how to do TEX code, so here's a picture:
Thanks!

\sum_{n=1}^{\infty} \frac{1}{(2n1)} would be over all odd numbers
replace (2n1) for even numbers with just (2n)