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Cos пи x. Y=2cos(x+п/4)+1 график. График cos x Pi/6. Cos x 2 Pi 4 +1 равно 0. Cos(x+п/4)=-1/2.
Y=2cos(x+п/4)+1 график. График cos x Pi/6. Cos x 2 Pi 4 +1 равно 0. Cos(x+п/4)=-1/2.

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