$\frac{3}{\sqrt{4-x^2}}$

$\frac{3}{\sqrt{1-x^2}}$

$\frac{1}{\sqrt{4-x^2}}$

$\frac{-1}{\sqrt{4-x^2}}$

$\frac{1}{2 \sqrt{\sqrt{\cosh (3)}}}\left(1+\frac{\sinh (3)}{\sqrt{\cosh (3)}}\right)$

$\frac{1}{2 \sqrt{\sqrt{\cosh (3)}}}\left(\log 3-\frac{\sinh (3)}{\sqrt{\cosh (3)}}\right)$

$\frac{\log 3 \sqrt{\cosh (3)}-\sinh (3)}{2(\cosh (3))^{\frac{3}{4}}}$

$\frac{\sqrt{\cosh (3)}-\sinh (3)}{2(\cosh (3))^{\frac{3}{4}}}$

$\frac{2}{9} \sqrt[3]{2}$

$\frac{\sqrt[3]{2}}{3}$

$\frac{4}{9} \sqrt[3]{2}$

$\frac{\sqrt[3]{2}}{9}$

1

-1

$\frac{7}{2}$

0