Mathematics · Application of Derivatives - Increasing and Decreasing Functions
If the function f(x) = sin x - cos 2x is defined on the interval [-π, π], then f is strictly increasing in the interval:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(-5π/6, -π/2) ∪ (-π/6, π/2)✓
- 2(-5π/6, π/2)
- 3(-π/2, -π/6)
- 4(-5π/6, -π/6) ∪ (-π/6, π/2)
Correct answer
(-5π/6, -π/2) ∪ (-π/6, π/2)
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