If the coefficient of xr in the expansion of (1-x)2n-1 is denoted by ar then prove that ar-1 + a2n-r = 0.
Dear Student!
The given expansion is (1 –x)2n – 1.
General term of the given expansion,
Cheers!
If the coefficient of xr in the expansion of (1-x)2n-1 is denoted by ar then prove that ar-1 + a2n-r = 0.
Dear Student!
The given expansion is (1 –x)2n – 1.
General term of the given expansion,
Cheers!