\[\int_{{}}^{{}}{\frac{\log (x+\sqrt{1+{{x}^{2}}})}{\sqrt{1+{{x}^{2}}}}\ dx=}\]

\[\log {{(x+\sqrt{1+{{x}^{2}}})}^{2}}+c\]

\[\frac{1}{2}{{[\log (x+\sqrt{1+{{x}^{2}}})]}^{2}}+c\]

\[\log (x+\sqrt{1+{{x}^{2}}})+c\]

\[\int_{{}}^{{}}{\frac{\log (x+\sqrt{1+{{x}^{2}}})}{\sqrt{1+{{x}^{2}}}

1.	\[\int_{{}}^{{}}{\frac{\log (x+\sqrt{1+{{x}^{2}}})}{\sqrt{1+{{x}^{2}}}}\ dx=}\]
A.	\[\frac{1}{2}{{[\log (x+\sqrt{1+{{x}^{2}}})]}^{2}}+c\]
B.	\[\log {{(x+\sqrt{1+{{x}^{2}}})}^{2}}+c\]
C.	\[\log (x+\sqrt{1+{{x}^{2}}})+c\]
D.	None of these
Answer» B. \[\log {{(x+\sqrt{1+{{x}^{2}}})}^{2}}+c\]

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\[\int_{{}}^{{}}{\frac{\log (x+\sqrt{1+{{x}^{2}}})}{\sqrt{1+{{x}^{2}}}}\ dx=}\]

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