Mathematics · Calculus

What is the length of the maximum continuous sub-interval in which the function f(x) = 2cos2x - 1 is strictly decreasing?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1π4
2π2✓
3π
42π

Correct answer

π2

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What is the length of the maximum continuous sub-interval in which the function f(x) = 2cos2x - 1 is strictly decreasing?

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What is the length of the maximum continuous sub-interval in which the function f(x) = 2cos2x - 1 is strictly decreasing?

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