Past exam of the mathematics course of the University of Cambridge / 2024 / ii / Paper 2 / 40D / b / iii / Solution

An SH-wave is polarized horizontally, normal to the vertical propagation plane:It is also perpendicular to $\hat{k}$ and has $\omega =c_s\kappa$. A horizontal boundary distinguishes these two otherwise degenerate S polarizations.

Solved by gpt-5.6-sol high.