x = var('x')
y=function('y',x)
DE = diff(y,x,2)-y-2*exp(x)
print "GS:", desolve(DE, [y,x], ics=[0,-1,0])
#check for particular solution
yp = x*exp(x)
V = diff(yp,x,2)-yp-2*exp(x)
if V == 0:
    print "yp = ", yp, "is a particular solution"
else:
    print "yp = ", yp, "is not a particular solution"

SageDays/Kreyszig-2.8-11 (last edited 2010-08-11 12:58:20 by zubinmehta)