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Academics – Mathematics : 2022/JUL/05

Question

Q5. Draw the graph of the function y = 0.5x² - 2x - 10 = 0 for the range, - 4 ≤ x ≤ 8, in intervals of 1. (8)

(b) Use the graph drawn in Q5(a) to determine EACH of the following:

(i) the minimum value of y; (2)

(ii) the solutions of the equation 0.5x² - 2x - 10 = 0; (3)

(iii) the solutions of the equation 0.5x² - 2x - 7 = 0; (3)

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