當m>0時,不等式化為(mx-2)(x+1)>0,解得x<-1,或x>
2 |
m |
當-2<m<0時,
2 |
m |
2 |
m |
2 |
m |
當m=-2時,不等式化為(x+1)2<0,此時無解;
當m<-2時,
2 |
m |
2 |
m |
2 |
m |
綜上,m=0時,不等式的解集是{x|x<-1};
m>0時,不等式的解集是{x|x<-1,或x>
2 |
m |
-2<m<0時,不等式的解集是{x|
2 |
m |
m=-2時,不等式無解;
m<-2時,不等式的解集是{x|-1<x<
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |
2 |
m |