||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||



{{{
var('y,b,c')
y=-0.5*exp(x)*sin(x)
b=diff(y,x,2)-4*diff(y,x)+4*y
c=exp(x)*cos(x)
bool(b == c)
}}}


 * '''Solution by''': 
   * <YASHWANTH>, <STUDENT>, <SNIST>
   *<SREE LAKSHMI>, <STUDENT>, <SNIST>