MCQ
$\lim _{x \rightarrow 0^{+}}\left(e^x+x\right)^{1 / x}$
  • A
    does not exist finitely
  • B
    is 1
  • is $e ^2$
  • D
    is 2

Answer

Correct option: C.
is $e ^2$
(C)
$\lim _{x \rightarrow 0^{+}}\left( e ^x+x\right)^{1 / x}$
If $\lim _{x \rightarrow a } f (x)=1$ and $\lim _{x \rightarrow a } g (x)=\infty$, then
$\lim _{x \rightarrow a }[ f (x)]^{ g (x)}= e ^{\lim _{x \rightarrow a } g (x)[ f (x)-1]}$
$=e^{\lim _{x \rightarrow 0^{+}}\left(\frac{e^x-1+x}{x}\right)}$
$= e ^{\lim _{x \rightarrow 0^{+}}\left(1+\frac{ e ^x-1}{x}\right)}$
$= e ^{1+1}$
$= e ^2$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free