Indefinite Integration

If \(\int \frac{\mathrm{d} x}{x \sqrt{1-x^3}}=\mathrm{k} \log \left(\frac{\sqrt{1-x^3}-1}{\sqrt{1-x^3}+1}\right)+\mathrm{c}\), (where \(\mathrm{c}\) is a constant of integration), then value of \(\mathrm{k}\) is