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Class 12 Continuity And Differentiability · Mcq Single Correct1 Marksdifferentiability

Class 12 Maths · Continuity And Differentiability · Mcq Single Correct #9

Which describes f(x)=|x|?
Graph of y=|x| showing the continuous corner at (0,0) and left/right slopes −1 and 1.
Graph of y=|x| showing the continuous corner at (0,0) and left/right slopes −1 and 1.

✅ Step-by-Step Solution

Final Answer: Option (C): Continuous everywhere; differentiable except at 0
  1. Absolute value is continuous on R. At 0 its left and right derivatives are −1 and 1; at every nonzero input it is linear locally.

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