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

/* code_begins */

{{{
t=var('t')
y=function('y',t)
de=4*diff(y,t,2)-4*diff(y,t)-3*y
desolve(de,[y,t],ics=[-2,exp(1),-exp(1)/2])}}}

/* code_ends */

 * '''Solution by''': 
   * <UMESH>, <STUDENT>, <AIT, PUNE>
   * <NITISH>, <STUDENT>, <AIT, PUNE>