If f(x) = |x − 2| + |x − 5|, then f is not differentiable at:
If f(x) = |x − 2| + |x − 5|, then f is not differentiable at:
- A. x = 2, 5
- B. x = 0
- C. x = 2 only
- D. x = 5 only
Answer: A) x = 2, 5
Explanation: Absolute value function sum has sharp corners at each critical point, x=2 and x=5.
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