#2.13-4
x=var('x')
y=function('y',x)
de=3*diff(y,x,2)+diff(y,x,1)+2*y==2*cos(x)-52*sin(2*x)
desolve(de,y)

SageDays/Kreyszig-2.13-4 (last edited 2010-08-12 10:04:13 by satishbillade)