Optimal Path Around Quicksand - Math Puzzle (HARD)

The video tutorial explores the problem of finding the optimal path to minimize travel time when speed varies with distance from a central point. It introduces the mathematical formulation using cylindrical coordinates and derives the expression for total time. The Euler-Lagrange equation and Beltrami identity are used to solve the differential equation for the optimal path. The solution is visualized as a spiral, and a MATLAB script confirms the results. The tutorial concludes with a discussion on the constants affecting the path.

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