\(\int \sqrt{\frac{\cos x-\cos ^{3} x}{1-\cos ^{3} x}}\) dx = _________ + C.
1
\(-\frac{3}{2} \cos ^{-1}\left(\cos ^{3 / 2} x\right)\)
2
\(-\frac{2}{3} \cos ^{-1}\left(\cos ^{3 / 2} x\right)\)
3
\(\frac{3}{2} \cos ^{-1}\left(\cos ^{3 / 2} x\right)\)
4
\(\frac{2}{3} \cos ^{-1}\left(\cos ^{3 / 2} x\right)\)