Which of following is correct

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1.Relation and Function

normal

Which of the following is correct

A

$\sqrt {{x^2}} = \,\left| x \right|$

B

${x^{x + 1}}\, = \,x.{x^x}$

C

$\frac{{\left| x \right|}}{x} = \left\{ \begin{array}{l}
1:x > 0\\
- 1:x < 0
\end{array} \right.$

D

All

Solution

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Standard 12

Mathematics

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