1.Relation and Function
easy

माना $f:[2,\;2] \to R$ इस प्रकार परिभाषित है, कि $f(x)=\left\{ \begin{align}
  & \ \ \ -1,\,\,\,\,-2\le x\le 0\text{ } \\ 
 & x-1,\ \ \ 0\le x\le 2\text{ } \\ 
\end{align} \right.$ के लिये,  तब  $\{ x \in ( - 2,\;2):x \le 0$ तथा $f(|x|) = x\} = $

A

$\{ - 1\} $

B

${0}$

C

$\{ - 1/2\} $

D

$\phi $

Solution

(c) सत्यापित करने पर, $f\left( {\left| { – \frac{1}{2}} \right|} \right) = f\left( {\frac{1}{2}} \right) = \frac{1}{2} – 1 = – \frac{1}{2}$

इस प्रकार $f(|x|) = x$

Standard 12
Mathematics

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