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

/* code_begins */

{{{
t,w=var('t,w')
Y=function('Y',t)
DE = diff(diff(Y,t),t) + Y-cos(w*t) 
de=desolve (DE,[Y,t])
print 'Transient solution is'
show(de)
print ',where w is not equal to 1'
}}}

/* code_ends */

 * '''Solution by''': 
   * <Hardik Gajera>, <student>, <IISER Pune>
   * <Lokesh Pimpale>, <student>, <IISER Pune>