Mathematics · Calculus
Let f(x) = |x| + |x - 1| + |x + 1| be a function defined on R, then f(x) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1differentiable for all x ∈ R
- 2differentiable for all x ∈ R other than x = -1, 0, 1✓
- 3differentiable only for x = -1, 0, 1
- 4not differentiable at any real point
Correct answer
differentiable for all x ∈ R other than x = -1, 0, 1
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