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

/* code_begins */

{{{

x = var('x')
y=function('y',x)
DE = diff(y,x,2)+3*diff(y,x)-4*y-8*cos(2*x)-6*sin(2*x)
print "GS:", desolve(DE, [y,x])
#check for particular solution
yp = -cos(2*x)
V = diff(yp,x,2)+3*diff(yp,x)-4*yp-8*cos(2*x)-6*sin(2*x)
if V == 0:
    print "yp = ", yp, "is a particular solution"
else:
    print "yp = ", yp, "is not a particular solution"

}}}

/* code_ends */

 * '''Solution by''': 
   * Zubin Mehta, Student, IIT Bombay