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ducmau
2 năm trước
Cho đồ thị hàm số y=ax, (a≠0) Đi qua điểm A (2;4)a, tìm hệ số a b, vẽ đồ thị hàm số vừa tìm được c, xét xem các điểm M (1;-2) N (-1;-2) có thuộc đồ thị hàm số không
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