Recent content by wilfredkwok

  1. W

    Non-linear function - Cubic and Quadratic functions

    erm... p+250=60x-2x^2 p+250=x(60-2x) x must be >1 and <30 Hence max x is 15. p = 15(60-2(15))-250 = 200
  2. W

    Non-linear function - Cubic and Quadratic functions

    is it something like this?: -2x^2 + 60x - 250 = P -2(x^2 -30x + 125 = P this rest i am stuck
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    Non-linear function - Cubic and Quadratic functions

    I do not know, i am on private studies, my lecturer just throw a book and assignments to me, and he ask me do it myself, i solve quite a few, left 2 question, thanks to youtube, where else this topic i find it confusing. can u help me?
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    Non-linear function - Cubic and Quadratic functions

    1. i am stuck ]2. The profit function is given by P=-2x^2 + 60x - 250, where x units is the quantity and P the total profit. Find the maximum profit and the number of units where maximum profit occurs. Sketch the curve of the profit function. 3. i started by factorize, but it...
  5. W

    Non-linear function - Cubic and Quadratic functions

    1. i am stuck 2. The profit function is given by P=-2x^2 + 60x - 250, where x units is the quantity and P the total profit. Find the maximum profit and the number of units where maximum profit occurs. Sketch the curve of the profit function. 3. i can't do anything, my brain just jammed...
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