∫ cos^(-3/7) x . sin^(-11/7) x . dx =

Question

\(\int cos^{-\frac{3}{7}}x . sin^{-\frac{11}{7}}x.dx =\)

∫ cos^-3/7 x . sin^-11/7 x . dx =

(a) \(log \left(sin^{-\frac{4}{7}}x\right) + c\)

(b) \(\frac{4}{7} tan^{\frac{4}{7}}x + c\)

(c) \(\frac{7}{4} tan^{-\frac{4}{7}}x + c\)

(d) log(cos^{\(\frac{3}{7}\)} x) + c

Answer 1

Correct answer is (c) \(-\frac{7}{4} tan^{-\frac{4}{7}}x + c\)