For the autonomous ODE dydx=(y−1)(y−2)(y−3)\frac{dy}{dx} = (y-1)(y-2)(y-3)dxdy=(y−1)(y−2)(y−3), which equilibrium solution is unstable?
y=1y=1y=1
y=2y=2y=2
y=3y=3y=3
None are unstable.