$\Large\int \frac {dx}{x\sqrt{1-x^3}} =$ $$\begin {array} {1 1} (a)\;\frac{1}{3} log \bigg | \frac {\sqrt {1-x^2}+1}{\sqrt {1-x^2}-1}\bigg | & \quad (b)\;\frac{1}{3} log \bigg |\frac{\sqrt {1-x^2}-1}{\sqrt {1-x^2}+1}\bigg| & \quad \\(c)\;\frac{2}{3} log \bigg |\frac{1}{\sqrt {1-x^3}}\bigg| & \quad(d)\;\frac{1}{3} log | 1-x^3 | \end {array}$$

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