Question: 3. (12 pts) Let u(x,y) = ex cosy; with x au chain rule find when s 1 and t 1. as 2 s t


3. (12 pts) Let u(x,y) = ex cosy; with x au chain rule find when s 1 and t 1. as 2 s t 2 and y ITSt. Using the
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