calculus

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Show that the curve given below has no tangent line with slope m1, where:
y = 4 x^3 + 8 x - 6
m1 = 7

  • calculus -

    The slope of the y(x) curve is
    dy/dx = 12 x^2 + 8

    The value of this number must be 8 or higher, for obvious reasons.

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