Let f(x)=p|x|+q, where p and q are real constants. If f'(x) exists at x=0, then what is the value of p?

NDA 2026 Mathematics question

Let , where and are real constants. If exists at , then what is the value of ?

Answer: (B)

For , , so the right-hand derivative at 0 is . For , , so the

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Question ID VK-030456