s=x+x2+x4+x8.......∞
=>s= x(1+x2+x4+x8...∞)
=>s=x(1+s)
=>s=x1-x
Shaswata Roy Check again.You made a mistake.
Upvote·0· Reply ·2013-05-24 11:01:31Sayan Sinha In the second step, it should have been s=x(1+x+x^2+x^4...inf)
Shaswata Roy You Sure...It's still wrong.
Sayan Sinha I know the it should have been x^3..x^5 and so on. So, how about taking x^2 common?
Sayan Sinha Nope. Doesn't work...