\[\int_{1/4}^{1/2}{\frac{dx}{\sqrt{x-{{x}^{2}}}}=}\] [SCRA 1986]

\[\int_{1/4}^{1/2}{\frac{dx}{\sqrt{x-{{x}^{2}}}}=}\]

1.	\[\int_{1/4}^{1/2}{\frac{dx}{\sqrt{x-{{x}^{2}}}}=}\] [SCRA 1986]
A.	\[\pi \]
B.	\[\frac{\pi }{2}\]
C.	\[\frac{\pi }{3}\]
D.	\[\frac{\pi }{6}\]
Answer» E.

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\[\int_{1/4}^{1/2}{\frac{dx}{\sqrt{x-{{x}^{2}}}}=}\] [SCRA 1986]

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