# PLEASE GIVE THE PROOF FOR LEIBNITZ FORMULA FOR PI$1\,-\,{\frac {1}{3}}\,+\,{\frac {1}{5}}\,-\,{\frac {1}{7}}\,+\,{\frac {1}{9}}\,-\,\cdots \;=\;{\frac {\pi }{4}}.\!$

sudhir pal
8 years ago
proving this require knowledge of taylor series expansion
proof not so important for IIT-JEE but result is important
attaching the solution
Thanks & Regards
Sudhir,