If I = ^ 7 x ~d x then I equals

Mathematics · JEE Advanced · NTA Exams — Integral Calculus

1. –cos x + cos³x – cos⁵x + \(\frac{1}{7}\)cos⁷x + c
2. –cos x + cos³x – \(\frac{3}{5} \cos ^{5} x+\frac{1}{7}\)cos⁷x + c
3. tan x – tan³x + sin x \(-\frac{1}{3} \cos ^{3}\)x + c
4. – cos x + cos⁵x \(-\frac{1}{3} \cos ^{3} x+\frac{1}{7}\)cos⁷x + c

Answer

(B) –cos x + cos 3 x – 3 5 ^ 5 x+ 1 7 cos 7 x + c

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