x=var('x')
k=var('k')
y=function('y',x)
de=(1*diff(y,x,x)-k*k*diff(y,x))
desolve(de,[y,x],ics=[0,1,1])

SageDays/Kreyszig-2.2-16 (last edited 2010-08-10 13:39:34 by prabhat)