Math Olympiad, I.S.I. Entrance and College Mathematics › Forums › Math Olympiad, I.S.I., C.M.I. Entrance › PRMO 2018 Discussions
- August 19, 2018 at 1:59 pm #22208Ashani DasguptaKeymaster
The Pre RMO 2018 Problems are posted here:
You may post your solutions in this thread.August 24, 2018 at 9:04 pm #22260saryu mehtaParticipant
sir, if by D alemberts ratio test, we get infinity, then the series is convergent or divergent?
for eg: in 1/n! applying alembers test we get infinity>1 so it ois convergent.
but on the other hand, the series like x+2x^2+3x^3……..to infinity is divergent if i apply the same test even though i am getting infinity in both of the cases.
how it works?
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