The value of \[\int_{{}}^{{}}{\frac{dx}{x\sqrt{{{x}^{4}}-1}}}\] is

1.	The value of \[\int_{{}}^{{}}{\frac{dx}{x\sqrt{{{x}^{4}}-1}}}\] is
A.	\[\frac{1}{2}{{\sec }^{-1}}{{x}^{2}}+k\]
B.	\[\log x\sqrt{{{x}^{4}}-1}+k\]
C.	\[x\log \sqrt{{{x}^{4}}-1}+k\]
D.	\[\log \sqrt{{{x}^{4}}-1}+k\]
Answer» B. \[\log x\sqrt{{{x}^{4}}-1}+k\]

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The value of \[\int_{{}}^{{}}{\frac{dx}{x\sqrt{{{x}^{4}}-1}}}\] is

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