_ 0 ^ / 4 x x ^ 3 x d x equal to
Mathematics · JEE Main · NTA Exams — Integral Calculus
\(\int_{0}^{\pi / 4} \frac{x \cdot \sin x}{\cos ^{3} x} d x\) equal to
- \(\frac{\pi}{4}+\frac{1}{2}\)
- \(\frac{\pi}{4}-\frac{1}{2}\)
- \(\frac{\pi}{4}\)
- none
Answer
(B) 4 - 1 2
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