MCQ
If $\text{A}=\displaystyle \left[ \begin{matrix} 1 &\text{amp; 2} \\ 3&\text{amp; 4} \end{matrix} \right],$ then which of the following is not an element of A ?
- ✓0
- B1
- C2
- D3
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$S_1$ : If $f(x)$ is a differentiable function with $f'(x)$ = $0$ in $(a, b)$ and $f(x)$ is increasing in $(a, b)$ , then $\frac {f(x)}{f\ '(x)}$ is also increasing in $(a, b).$
$ S_2$ : Both $sin\ x$ and $tan\ x$ are increasing function in $(0,\frac{\pi}{2})$. Which of the following is true