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The function f(x)=∣x−1∣f(x) = |x - 1| is

Solution

✅ Correct Option: 3

f(x)=∣x−1∣f(x) = |x-1| has a corner at x=1x = 1 where left derivative is −1-1 and right derivative is +1+1. These differ, so not differentiable at x=1x = 1. Differentiable elsewhere.

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