#2.4-4
x=var('x')
y=function('y',x)
y=5*x+sin(5*x)
de=diff(y,x,2)+10*diff(y,x,1)+25*y
print de

SageDays/Kreyszig-2.4-4 (last edited 2010-08-11 13:33:31 by shambulingayya.N.D)