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AP EAMCET · Maths · Indefinite Integration

If \(x \notin\left[2 n \pi-\frac{\pi}{4}, 2 n \pi+\frac{3 \pi}{4}\right]\) and \(n \in \mathbb{Z}\), then \(\int \sqrt{1-\sin 2 x} d x=\)

  1. A \(-\cos x+\sin x+c\)
  2. B \(\cos x+\sin x+c\)
  3. C \(-\cos x-\sin x+c\)
  4. D \(\cos x-\sin x+c\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\cos x+\sin x+c\)

Step-by-step Solution

Detailed explanation

\(\begin{aligned} & \text { } \int \sqrt{1-\sin 2 x} d x=\int \sqrt{(\cos x-\sin x)^2 d x} \\ & =\int|\cos x-\sin x| d x \Rightarrow \sin x+\cos x+c\end{aligned}\)