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1,2.3 Given that y=2x - 3x2 - 12x, (a) find coordinates of all the critical points, (b) classify(max or min) these points using 2nd derivative

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1,2.3 Given that y=2x - 3x2 - 12x, (a) find coordinates of all the critical points, (b) classify(max or min) these points using 2nd derivative test, (e) find the intervals in which y is decreasing, (d) find the global maximum and minimum of y, -25*53, (e) find the abscissa of inflection point if any () sketch the graph clearly indicating local max and min

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