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AP EAMCET · Maths · Indefinite Integration

\(\int \cos \sqrt{x} d x\) is equal to

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

Answer & Solution

Correct Answer

(A) \(2 \sqrt{x} \sin \sqrt{x}+2 \cos \sqrt{x}+c\)

Step-by-step Solution

Detailed explanation

\(\int \cos \sqrt{x} d x\) \(\begin{aligned} & \text { Let } I=\int \cos \sqrt{x} d x \\ & \text { Let } \sqrt{x}=t \\ & x=t^2\end{aligned}\) Differentiating w.r.t ‘x’…