Question

URGENTE!!!!!!!!
calcule o limite
$\lim_{x \to 2} \frac{\sqrt{1+x} - \sqrt{1-x}}{x}$

Answer 1

$\lim_{x \to 2} \frac{\sqrt{1+x}-\sqrt{1-x}}{x}= \frac{\sqrt{1+2}-\sqrt{1-2}}{2}= \frac{\sqrt3 - \sqrt{-1}}{2} = \frac{\sqrt{3}-i}{2}$