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How many tangent lines to the curve y = x/(x+1) pass through the point (1,2)? At which points do these tangent lines touch the curve?
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There are two... (-0.26794919243173,-0.36602540378558) (-3.7320508756769,1.36602540378460)
Take the derivative of the curve.... let it represent the slope and set into the point-slope form of a line with the x=1 and y=2...then set the equation of the line equal to the equation of the curve and find the points of intersection....and you are done.
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