indefinite-integration

Question: To find the value of $\int_{{}}^{{}}{\frac{dx}{x\sqrt{2ax-{{x}^{2}}}}}$, the suitable substitution is



1) $x=a\cos t$
2) $x=2a\cos t$
3) $x=2at$
4) $x=2a{{\sin }^{2}}t$
Solution: Explanation: No Explanation
Integration by substitution

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