given the function f(x)=x^3-4x ,what are approximately the intervals on which f is increasing?

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  • 3 weeks ago
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    points where slope is zero are:

    y = x³ - 4x

    y = 3x² – 4 = 0

    x² = 4/3

    x  = ±1.155

    increasing from –∞ to –1.155

        and from +1.155 to +∞

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