Mathematics, 18.06.2021 02:40 golderhadashaowtatz

Trong các hàm số sau, hàm số nào là hàm chẵn? A. cos 3 y x          B. y x  sin C. y x  1 sin D. y x x

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Trong các hàm số sau, hàm số nào là hàm chẵn? A. cos 3 y x          B. y x  sin C. y x  ...