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Question Number 123509 by Jamshidbek2311 last updated on 26/Nov/20

$$\underset{-\frac{\pi }{}2}{\stackrel{\frac{\pi }{2}}{\int }}\mid cosx\mid =?$$

Answered by bramlexs22 last updated on 26/Nov/20

$$=\underset{-\pi /2}{\stackrel{\pi /2}{\int }}\mid \cos x\mid dx=2\underset{0}{\stackrel{\pi /2}{\int }}\cos xdx$$$${=2\left(\sin x\right)]}_0^{\pi /2}=2$$

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