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Posted by on Tuesday, November 16, 2010 at 6:05pm.

Find the x-coordinates of all points on the graph of y=x^3 - 4x^2 + 5x at which the tangent line is horizontal.

  • Calculus - , Tuesday, November 16, 2010 at 6:09pm

    Translate to math talk: find when dy/dx is zero.


    y'=3x^2-8x+5=0
    0=(3x-5)(x-1)

    I assume you can do it from here.

  • Calculus - , Tuesday, November 16, 2010 at 6:10pm

    Thanks

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