Question: In Problems 1-3, find the gradient of the given function. 1. ((x, y) = x sin x + y cos y 2. ((x, y) =

In Problems 1-3, find the gradient of the given function.
1. ((x, y) = x sin x + y cos y
2. ((x, y) = xe-xy + yexy
3. ((x, y, z) = x2 + y2 + z2

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