SOLUTION: what is the solution for this (1+2p+3p^2+4p^3+...............) plzzz tell how u got it and wat formula u used????

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Question 401398: what is the solution for this
(1+2p+3p^2+4p^3+...............)
plzzz tell how u got it and wat formula u used????
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
There is no solution for that. You can evaluate the sum more easily by rearranging the terms:

(1+p+p^2+p^3+...) + (p+p^2+p^3+p^4+ ...) + (p^2+p^3+p^4+...) + ...

= (1+p+p^2+p^3+...)(1+p+p^2+p^3+...) which converges if and only if -1+%3C+p+%3C+1.