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xunutocxu59
2 năm trước
Bài 2 (2,0 điểm): Cho hàm số : y = (m+1)x + m -1 . (d) (m là tham số) a. Xác định m để hàm số đã cho là hàm số bậc nhất. b. Xác đinh m để đồ thị hàm số đã cho đi qua điểm ( 7 ; 2). c) Chứng tỏ (d) đã cho luôn đi qua một điểm cố định khi m thay đổi
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