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phamhiep1312
2 năm trước
1.Tìm giá trị thực của tham số m để hệ bất phương trình $\left \{ {{2m(x+1)\geq x+3} \atop {4mx+3\geq 4x}} \right.$ có nghiệm duy nhất 2. Tìm giá trị thực của tham số m để hệ bất phương trình $\left \{ {{mx\leq m-3} \atop {(m+3)x\geq m-9}} \right.$ có nghiệm duy nhất
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