$\int \frac{d x}{x \sqrt{x^{2}-\pi}}=$ কত?

$\frac{1}{\sqrt{\pi}} \cos ^{-1}\left(\frac{\mathrm{x}}{\sqrt{\pi}}\right)+\mathrm{c}$

$\frac{1}{\sqrt{\pi}} \sec ^{-1}\left(\frac{x}{\sqrt{\pi}}\right)+c$

$\frac{1}{\sqrt{\pi}} \sec \sqrt{\pi}+c$

$\frac{1}{\sqrt{\pi}} \sec ^{-1}\left(\frac{1}{\sqrt{\pi}}\right)+\mathrm{c}$

$\sec ^{-1}\left(\frac{x}{\sqrt{\pi}}\right)+c$