13. if the general solution of the de x*y" + xy' - 4y = x in]x| is given by y(x) = cc,x +c x)2+ kx -x in xl, then the value of k correct upto three decimal plac

13. If the general solution of the DE x*y" + xy' - 4y = x In]x| is given by y(x) = Cc,x +C x)2+ kx -x In xl, then the value of k correct upto three decimal places is 16