Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2021/ii/paper-3/31a/d/solution

For small, has two negative eigenvalues and is a stable node. The two nearby equilibria satisfy and are saddles. Their stable and unstable separatrices form the local phase portrait; trajectories in the wedge between the stable manifolds approach , while trajectories crossing an unstable direction leave the neighbourhood.

New to topics? Read the docs here!