# Summation Problem

Hello
i want to know if we have a series with this equation

and change it to this form

the statement in Summation change or not?(

this changes it right?

where can i find the Summation notes?

mathman
(Assuming convergence) The first change makes no difference. The second change, you have n=0 twice.

Thanks mathman
could you tell me how can i improve myself Summation? where can i find the Summation tips?

mathman
Thanks mathman
i have another questions

you assume that series is:

can i multiple (-) (t and 0) ?

if yes what about argument (it changed?)?