MCQ
If $f(x) = \left\{ \begin{array}{l}x\;:\;x < 0\\1\;:\;x = 0\\{x^2}\;:\;x > 0\end{array} \right.,$then $\mathop {\lim }\limits_{x \to 0} f(x) = $
- A$0$
- B$1$
- C$2$
- ✓Does not exist
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$(I)$ If $\alpha \in(-1,0)$, then $\mathrm{b}$ cannot be the geometric mean of $\mathrm{a}$ and $\mathrm{c}$
$(II)$ If $\alpha \in(0,1)$, then $\mathrm{b}$ may be the geometric mean of $a$ and $c$