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NDA 2012
Exam
NDA
Year
2012
Subject
Mathematics
Chapter
Continuity and Differentiability

NDA 2012 · Mathematics · Continuity and Differentiability

Which one of the following functions is differentiable for all real...

Which one of the following functions is differentiable for all real values of xx ?

Options

  1. Ax∣x∣\frac{x}{|x|}
  2. Bx∣x∣x|x|
  3. C1∣x∣\frac{1}{|x|}
  4. D1x\frac{1}{x}

Correct answer

B. x∣x∣x|x|

Step-by-step solution

The correct answer is option B.
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