t=var('t')
y1=function('y1',t)
y2=function('y2',t)
deq1=diff(y1,t)-y1-4*y2+t**2-6*t
deq2=diff(y2,t)-y1-y2+t**2-t+1
sol=desolve_system([deq1,deq2],[y1,y2],ics=[0,2,-1])
sol

SageDays/Kreyszig-3.6-14 (last edited 2010-08-12 13:07:02 by PraveenKumar)