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

/* code_begins */

{{{
x=var('x')
y=function('y',x)
deq=diff(y,x)*(1+y+2*x)-1+2*y-4*x==0
desolve(deq,[y,x])
}}}

/* code_ends */

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