indefinite-integration

Question: $\int{{{\cos }^{-3/7}}}x{{\sin }^{-11/7}}x\,\,dx=$

1) $\log |{{\sin }^{4/7}}x|+c$

2) $\frac{4}{7}{{\tan }^{4/7}}x+c$

3) $\frac{-7}{4}{{\tan }^{-4/7}}x+c$

4) $\log |{{\cos }^{3/7}}x|+c$

Solution:

Explanation: No Explanation

Integration by substitution

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