若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
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![若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a](/uploads/image/z/5536245-21-5.jpg?t=%E8%8B%A5a%2Bb%E5%A4%A7%E4%BA%8E0%2C%E4%B8%94b%E5%B0%8F%E4%BA%8E0%2C%E5%88%99a%2Cb%2C-a%2C-b%E7%9A%84%E5%A4%A7%E5%B0%8F%E5%85%B3%E7%B3%BB%E4%B8%BAA.-a%EF%BC%9C-b%EF%BC%9Cb%EF%BC%9CaB.-a%EF%BC%9Cb%EF%BC%9C-b%EF%BC%9CaC.-a%EF%BC%9Cb%EF%BC%9Ca%EF%BC%9C-bD.b%EF%BC%9C-a%EF%BC%9C-b%EF%BC%9Ca)
若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为
A.-a<-b<b<a
B.-a<b<-b<a
C.-a<b<a<-b
D.b<-a<-b<a
若a+b大于0,且b小于0,则a,b,-a,-b的大小关系为A.-a<-b<b<aB.-a<b<-b<aC.-a<b<a<-bD.b<-a<-b<a
a+b大于0,且b小于0
∴a>0,│a│>-b
∴a,b,-a,-b的大小关系为
a>-b>b>-a
a>-b>b>-a
a最大,-b次之,b第三,-a最小