Class 12 Continuity And Differentiability · Mcq Single Correct1 Marksdifferentiability
Class 12 Maths · Continuity And Differentiability · Mcq Single Correct #106
Which describes f(x)=|cos x|?
✅ Step-by-Step Solution
Final Answer: Option (C): Continuous everywhere, not differentiable at (2n+1)π/2
- The composition is continuous everywhere. Corners occur exactly where cos x=0 with nonzero derivative, namely x=(2n+1)π/2.
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