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

/* code_begins */

{{{
var('x')
y=function('y',x)
desolve(diff(y,x)+y-tan(x)*exp(-x),[y,x])
}}}

/* code_ends */

 * '''Solution by''': 
   * Swati Ahuja, Student, IIT Roorkee
   * Kesarwani Aashita Chandrashekhar, Student, IIT Roorkee
   * Praveen Kumar, Student, IIT Roorkee