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Question Number 72724 by rajesh4661kumar@gmail.com last updated on 01/Nov/19

Commented by kaivan.ahmadi last updated on 01/Nov/19

$$\frac{\pi }{2}<x_1<x_2<\pi \Rightarrow 0<\mid {cosx}_2\mid <\mid {cosx}_1\mid <1\Rightarrow$$$$log\mid {cosx}_2\mid <log\mid {cosx}_1\mid$$$$$$$$$$

Commented by Henri Boucatchou last updated on 02/Nov/19

$$Youwouldhavefirstcorrecttheintervalbefore...$$

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