CUET · MATHS · PYQ PAPER 2023
The function given by \(f(x)=|x-1|+|x-2|+|x-3|\) is:
- A Continuous and differentiable for all \(x \in R\).
- B Continuous everywhere but differentiable at x = 1 , 2 and 3 only
- C Continuous but not differentiable at x = 1 , 2 and 3
- D Differentiable but not continuous at x = 1, 2 and 3
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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