Question:
The function f(x)= x-4x is strictly decreasing on
The function f(x)= x-4x is strictly decreasing on
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Strictly decreasing f'(x)<0.
Updated On: Mar 18, 2026
- (-(π)/(3),(π)/(3))
- ((π)/(3),(π)/(2))
- (-(π)/(3),(π)/(2))
- ((π)/(2),π)
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The Correct Option is A
Solution and Explanation
Step 1: f'(x)=²x-4
Step 2: ²x<4 ²x>\frac14 |x|<(π)/(3)
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