Figure 9From: Internal feedback stabilization of multi-dimensional wave equations with a boundary delay: a numerical studyThe energy \(E_{0}(t)\) of the wave system (1.6)-(1.10) for different delays when \(a(x)=e^{(x_{1} x_{2})}\) with: a) \(k=0.1\); b) \(k=-0.1\); c) \(k=0.2\); d) \(k=-0.2\)Back to article page