var('x,y')
y=function('y',x)
desolve(diff(y,x,2) - 4*diff(y,x) + 5*y == e^(2*x)*cos(x), dvar = y)

SageDays/Kreyszig-2.11-6 (last edited 2010-08-11 13:15:40 by Abhi-akash)