indefinite-integration

Question: $\int_{{}}^{{}}{\frac{3{{x}^{2}}}{\sqrt{9-16{{x}^{6}}}}}\ dx=$

1) $\frac{1}{4}{{\sin }^{-1}}\left( \frac{4{{x}^{3}}}{3} \right)+c$

2) $\frac{1}{3}{{\sin }^{-1}}\left( \frac{4{{x}^{3}}}{3} \right)+c$

3) $\frac{1}{4}{{\sin }^{-1}}{{x}^{3}}+c$

4) $\frac{1}{3}{{\sin }^{-1}}{{x}^{3}}+c$

Solution:

Explanation: No Explanation

Integration by substitution

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