\[\int_{{}}^{{}}{\sqrt{1+{{x}^{2}}}\ dx=}\] [MP PET 1987, 89]

1.	\[\int_{{}}^{{}}{\sqrt{1+{{x}^{2}}}\ dx=}\] [MP PET 1987, 89]
A.	\[\frac{x}{2}\sqrt{1+{{x}^{2}}}+\frac{1}{2}\log (x+\sqrt{1+{{x}^{2}}})+c\]
B.	\[\frac{2}{3}{{(1+{{x}^{2}})}^{3/2}}+c\]
C.	\[\frac{2}{3}x{{(1+{{x}^{2}})}^{3/2}}+c\]
D.	None of these
Answer» B. \[\frac{2}{3}{{(1+{{x}^{2}})}^{3/2}}+c\]

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\[\int_{{}}^{{}}{\sqrt{1+{{x}^{2}}}\ dx=}\] [MP PET 1987, 89]

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