July 27th, 2008, 10:25 AM  #1 
Newbie Joined: Apr 2008 Posts: 20 Thanks: 0  Solutions to exact equations
F(x,y) is a function. F_x + F_y * y' = 0 is an exact equation. F_x is the derivative with respect to x and F_y is the derivative with respect to y. If I write it more clearly, it should appear like this: dF/dx + dF/dy * dy/dx = 0 How can we prove that the only solutions are F(x, y) = c are the only solutions to the exact equations? 

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equations, exact, solutions 
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