If Cr=nCr,then C0−13C1+15C2⋯ upto (n+1)term equal
∫01 x(1−x)ndx
∫01 1−x2ndx
0
1+∫01 x(1+x)ndx
C0−13C1+15C2−⋯=∫01 C0−C1x2+C2x4−⋯dx=∫01 1−x2ndx