SOLUTION: the derivative of x+y=xy with respect to y. Y is constant

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Question 1080981: the derivative of x+y=xy with respect to y. Y is constant
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%2By=xy
Implicitly differentiating,
dx%2Bdy=xdy%2Bydx
dy-xdy=ydx-dx
%28y-1%29dx=%281-x%29dy
dx%2Fdy=%281-x%29%2F%28y-1%29