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Determine whether the equation is exact. If it is exact, FIND THE SOLUTION. If not write...

Determine whether the equation is exact. If it is exact, FIND THE SOLUTION. If not write NOT EXACT.

A) (3x + 7) + (3y − 3)y' = 0

B) (7x2 − 2xy + 8) + (2y2 − x2 + 7)y' = 0

C) (ex sin y + 2y) − (2x − ex sin y)y' = 0

D) (y/x + 10x) + (lnx - 7) y' = 0 x>0

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