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1. |
What will be the range of the function f(x) = 2x3 – 9x2 – 24x + 5 which decreases with x? |
A. | -1 < x < 4 |
B. | 1 < x < 4 |
C. | -1 ≤ x < 4 |
D. | -1 < x ≤ 4 |
Answer» B. | |