Images COS 2 X

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Cos 2 x. 1-Cos2x. Cos^2x=1/2. Cos2x 1/2 решение. 2cos 1 2 2 cos 2 x x         .
1-Cos2x. Cos^2x=1/2. Cos2x 1/2 решение. 2cos 1 2 2 cos 2 x x         .

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