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Math Help - Instantaneous rate of change in a density function

  1. #1
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    Instantaneous rate of change in a density function

    Instantaneous rate of change help!!?

    Find and interpret the instantaneous rate of change when 50% remains?
    D(x) = 1.66 - 0.90x + 0.47x^2
    X is the fraction of remaining brine when x is greater than or equal to 0 or less than or equal to 1
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  2. #2
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    Re: Instantaneous rate of change in a density function

    Hey Emma22.

    Try calculating the derivative at the point when 50% remains (Hint when 50% remains, then x = 0.5).
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