Question $1$:$(($solve c only$))$

A standing normal shock occurs in air that is flowing at a Mach number of $1\mathrm{.}8.$

$($c$).[($b$)]$ Compute the entropy change for the air as it passes through the shock.Repeat part $($b$)$ for flows at $\backslash ($ M$=2\mathrm{.}8\backslash )$ and $3\mathrm{.}8.$ What pattern do you see?