2x/(1-x)

问题描述:

2x/(1-x)

答:
2x/(1-x)0
1/(x-1)>-1
x-1>0或者x-11或者x2/x-1>0怎么解??是2/(x-1)>0吗?那么x-1>0,x>12/x-1>0写一下过程2/x-1>02/x>10