#2.13-3
x=var('x')
y=function('y',x)
de=diff(y,x,2)+3*diff(y,x,1)+2*y==20*sin(x)
desolve(de,y)

SageDays/Kreyszig-2.13-3 (last edited 2010-08-12 10:01:03 by satishbillade)