Ответ:
cos П(2x-1)/3=1/2
П(2x-1)/3=-π/3+2πk U π(2x-1)/3=π/3+2πk
2x-1=-1+6k U 2x-1=1+6k
2x=6k U 2x=2+6k
x=3k U x=1+3k.k∈z
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Ответ:
cos П(2x-1)/3=1/2
П(2x-1)/3=-π/3+2πk U π(2x-1)/3=π/3+2πk
2x-1=-1+6k U 2x-1=1+6k
2x=6k U 2x=2+6k
x=3k U x=1+3k.k∈z