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Câu 9:

Cho tập hợp A = (-4; 3); B = (-4; 1 - $\frac{1}{m}$

Câu 9: Cho tập hợp A = (-4; 3); B = (-4; 1 - 1m\frac{1}{m}m1​] . Giá trị m < 0 để A ⊂ B là:

Thông tin câu hỏi

Câu 9:

Cho tập hợp A = (-4; 3); B = (-4; 1 - $\frac{1}{m}$ ] . Giá trị m < 0 để A ⊂ B là: