If `(y_(1),y_(2))` are two solutions of the differential `(dy)/(dx)+p(x).y=Q(x)` Then prove that `y=y_(1)+C(y_(1)-y_(2))` is the genral solution of the equation where C is any constant. For what relation between the constant `alpha,beta` will the linear combination `alphay_(1)+betay_(2)` also be a Solution.