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

/* code_begins */

{{{
automatic_names('true')
y=function('y',x)
d=diff(y,x,3)+3*diff(y,x,2)+3*diff(y,x,1)+y-30*(e^(-x))==0
desolve_laplace(d,[y,x],ics=(0,3,-3,-47))


sol:
  	

5*x^3*e^(-x) - 25*x^2*e^(-x) + 3*e^(-x)


}}}

/* code_ends */

 * '''Solution by''': 
   * <eshwara>, <student>, <snist>