prove that the line x+y=1 touches the parabola y=x-x^2 and determine the do ordinates of point of tangency

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- January 2nd 2009, 07:06 AMmohamedsafyurgent parabola problem plz help!
prove that the line x+y=1 touches the parabola y=x-x^2 and determine the do ordinates of point of tangency

- January 2nd 2009, 07:14 AMIsomorphism