Images Y COS 2 4X

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Y cos 2 4x. Sin y*cosy=1/2 sin2x+sin2y =0 система уравнения. Cosy/cosx=siny. Cos2x. Sin x+siny.
Sin y*cosy=1/2 sin2x+sin2y =0 система уравнения. Cosy/cosx=siny. Cos2x. Sin x+siny.

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