||'''Book'''|| Advanced Engineering Mathematics || ||'''Author'''|| Erwin Kreyszig || ||'''Edition'''|| 8th Edition || /* code_begins */ {{{ #2.13-4 x=var('x') y=function('y',x) de=3*diff(y,x,2)+diff(y,x,1)+2*y==2*cos(x)-52*sin(2*x) desolve(de,y) }}} /* code_ends */ * '''Solution by''': *K B Patil,Lecturer,SIGCOE K.K.NAVI MUMBAI.