Solution:
we have ,
on multiplying Eqs. (i) and (ii) and taking the
coefficient of constant terms in right hand side
In right hand side
term containing xn in (1 + x)2n.
clearly, the coefficient of xn in (1 + x)2n is equal to
then is equal to
we have ,
on multiplying Eqs. (i) and (ii) and taking the
coefficient of constant terms in right hand side
In right hand side
term containing xn in (1 + x)2n.
clearly, the coefficient of xn in (1 + x)2n is equal to