July 2022 1 3 Report
Решите уравнение [tex]sin ^{2} \frac{x}{2} -cos ^{2} \frac{x}{2} =cos2x[/tex]
Найдите все корни этого уравнения, принадлежащие промежутку [tex][- \frac{ \pi }{2}; \pi )[/tex]
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