MCQ
$5 x \geq-10, x \in N$ then $x \in$
- A$[-2, \infty)$
- B$\phi$
- ✓$\mathrm{N}$
- D$\{\ldots \ldots-2,-1,0,1 \ldots\}$
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$\lim _{\alpha \rightarrow 0}\left(\frac{e^{\cos \left(\alpha^n\right)}-e}{\alpha^m}\right)=-\left(\frac{e}{2}\right)$
then the value of $\frac{m}{n}$ is