Question:medium
The function \( f(x) = 2x^3 - 3x^2 - 36x + 28 \) is increasing in
The function \( f(x) = 2x^3 - 3x^2 - 36x + 28 \) is increasing in
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Factor derivative completely, then use sign chart.
Updated On: Apr 21, 2026
- \( (-\infty,-1] \cup [3,\infty) \)
- \( (-\infty,-2] \cup [3,\infty) \)
- \( (-\infty,-2] \cup [5,\infty) \)
- \( (-\infty,-5] \cup [3,\infty) \)
- \( (-\infty,-2] \cup [8,\infty) \)
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The Correct Option is B
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