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TS EAMCET · Maths · Indefinite Integration

\(\int \frac{x+\cos x}{1-\sin x} d x=\)

  1. A \(x \tan \left(\frac{\pi}{4}+\frac{x}{2}\right)+\mathrm{c}\)
  2. B \(x \tan \frac{x}{2}+\mathrm{c}\)
  3. C \(x \cot \frac{x}{2}+\mathrm{c}\)
  4. D \(x \cot \left(\frac{\pi}{4}+\frac{x}{2}\right)+\mathrm{c}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(x \tan \left(\frac{\pi}{4}+\frac{x}{2}\right)+\mathrm{c}\)

Step-by-step Solution

Detailed explanation

\( \frac{d}{dx} \left( x \tan \left(\frac{\pi}{4}+\frac{x}{2}\right) \right) = \tan \left(\frac{\pi}{4}+\frac{x}{2}\right) + x \cdot \frac{1}{2} \sec^2 \left(\frac{\pi}{4}+\frac{x}{2}\right) \). \( \tan \left(\frac{\pi}{4}+\frac{x}{2}\right) = \frac{\cos x}{1-\sin x} \).…