Evaluate the Integral $\int \frac{6 \sin 2 x}{1+\cos ^{4} x} d x$

question 53

Multiple Choice

Evaluate the integral. $\int \frac{6 \sin 2 x}{1+\cos ^{4} x} d x$

• A) \(6 \arctan \left(\sec ^{2} x\right)+C\)
• B) \(-6 \cos ^{2} 2 x+C\)
• C) \(-6 \arcsin (\tan x)+C\)
• D) \(1-6 \cos ^{2} x+C\)
• E) None of these

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