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Academics – Mathematics : 2014/OCT/05

Question

Q5. (a) Plot the graph of y = 3x³ – 3x² – 12x + 7 at unit intervals from x = -3 to x = 3. (13)

Suggested scales: horizontal axis 2 cm = 1

vertical axis 2 cm = 10

(b) Using the graph drawn in Q5(a) determine the solutions of the equation: (3)

3x³ – 3x² – 12x + 7 = 0

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