3 Answers
Sourish Ghosh
·2013-07-05 09:20:59
\sum \frac{\binom{2r}{r}}{2^{2r+1}(r+1)}
How to proceed after this?
Manish Shankar
·2013-07-11 01:47:37
take 1/2 common
and write 14=4-34
and write 1.34.6=1.3.(6-5)4.6
and so on
proceed to get the answers