\[\frac{d}{dx}\log (\sqrt{x-a}+\sqrt{x-b})=\]

1.	\[\frac{d}{dx}\log (\sqrt{x-a}+\sqrt{x-b})=\]
A.	\[\frac{1}{2[\sqrt{(x-a)}+\sqrt{(x-b)}]}\]
B.	\[\frac{1}{2\sqrt{(x-a)(x-b)}}\]
C.	\[\frac{1}{\sqrt{(x-a)(x-b)}}\]
D.	None of these
Answer» C. \[\frac{1}{\sqrt{(x-a)(x-b)}}\]

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\[\frac{d}{dx}\log (\sqrt{x-a}+\sqrt{x-b})=\]

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