MCQ
$\mathop {\lim }\limits_{x \to \frac{{{\pi ^ + }}}{2}} {e^{\left[ {cotx} \right]}}$ is equal to :-
(where $[.]$ is greatest integer function)
(where $[.]$ is greatest integer function)
- A$e$
- B$1$
- C$0$
- ✓$\frac{1}{e}$
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Let $\mathrm{a}=1+\frac{{ }^2 \mathrm{C}_2}{3 !}+\frac{{ }^3 \mathrm{C}_2}{4 !}+\frac{{ }^4 \mathrm{C}_2}{5 !}+\ldots$, Then $\frac{2 b}{a^2}$ is equal to.........................