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X 0 p. Y cos x п/2. Y=cos(x+п/2)+1. Y=cos (п/2-х)+1. Y=2cos x -п/2;п/2.
Y cos x п/2. Y=cos(x+п/2)+1. Y=cos (п/2-х)+1. Y=2cos x -п/2;п/2.

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