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CUET · MATHS · PYQ PAPER 2023

The function given by \(f(x)=|x-1|+|x-2|+|x-3|\) is:

  1. A Continuous and differentiable for all \(x \in R\).
  2. B Continuous everywhere but differentiable at x = 1 , 2 and 3 only
  3. C Continuous but not differentiable at x = 1 , 2 and 3
  4. D Differentiable but not continuous at x = 1, 2 and 3
Verified Solution

Answer & Solution

Correct Answer

(C) Continuous but not differentiable at x = 1 , 2 and 3

Step-by-step Solution

Detailed explanation

The function \(f(x) = |x-1| + |x-2| + |x-3|\) is a sum of absolute value functions. Each term \(|x-c|\) is continuous for all \(x \in R\). The sum of continuous functions is continuous. Therefore, \(f(x)\) is continuous for all \(x \in R\). Each term \(|x-c|\) is not…
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