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题目
Give a ,b ,c satisfy c<b<a and ac<0 ,then which one is not sure to be correct in the following
inequalities?
A a分之b >a分之c
B c分之(b-a)>0
C c分之(b²)>c分之a²
D ac分之(a-c)<0

提问时间:2021-01-12

答案
choose C,for example,c = -2,b = -1,a=1,obviously,b²/c = a²/c
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