Question

Please solve this sum

Answer 1

Answer:

your answer is √45

Step-by-step explanation:

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Answer 2

Answer:

$\int \sqrt{1 + cos2x} dx = > \int \sqrt{2 {cos}^{2} x} dx \\ \\ = > \sqrt{2} \int cosxdx \\ \\ \\ = > sinx \sqrt{2}$

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