Question: Using the Principle of Exactness, determine whether the functions below are exact or inexact.f(x,y)=xy3yx32xf(x,y)=xy3sin(y)cos(x)

Using the Principle of Exactness, determine whether the functions below are exact or inexact.f(x,y)=xy3yx32xf(x,y)=xy3sin(y)cos(x)

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