Question: Problem 2.1. Test the following differentials for exactness. For those cases in which the differential is exact, find the function u(x, y). (a) dua =

Problem 2.1. Test the following differentials for exactness. For those cases in which the differential is exact, find the function u(x, y).

(a) dua = + (b) dub (c) duc == = xdy (y-x)dx

(a) dua = + (b) dub (c) duc == = xdy (y-x)dx + (x + y)dy. (2y23x)dx - 4xy dy. 3x)dx-4xy

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