My work:
I guess directional derivative has to do something with it. i an find the $$\nabla C $$ but how to find the direction of maximum increase ? Concentration is from the source and shark position is somewhere else.
How to get path from ppm ?? ppm is chemistry hahaha. I hate it Furthermore it states 2 methods to solve.
Can you give me hints of the methods and let me know what do I need to find. I can try on my own. Please do comment