# Thread: Are these ODE's stiff?

1. ## Are these ODE's stiff?

dx/dt = -5x x(0) = 5
dy/dt = (4x)/3 - 2y y(0) = 0

Are these ODE's stiff? What exactly does stiffness mean? Thanks,

Kim

2. Originally Posted by Kim Nu
dx/dt = -5x x(0) = 5
dy/dt = (4x)/3 - 2y y(0) = 0

Are these ODE's stiff? What exactly does stiffness mean? Thanks,

Kim
There is no fixed (universally accepted) definition of stiffness, but see the Wikipedia article anyway.

CB