Chapter 4, Problem 14P

To determine

A MATLAB code that calculates the time required (consider path $C$ ) to reach the swimmer in terms of the running speed, the distance $L=48\text{m}$, $d_s=30\text{m}$, $d_w=42\text{m}$ and the lateral distance $y$ at which the lifeguard enters the water; the minimum time $t_{\min }$ and the entry point $y$ using MATLAB’s built in function $\min$; the angles that correspond to the calculated value of $y$; whether the result satisfies the Snell’s law.