x+3/x-1

来源：学生作业帮助网编辑：六六作业网时间：2024/05/17 05:04:38

x+3/x-1x+3/x-1x+3/x-1(x-x+3)/x0,因为x-x+3=(x-1/2)+11/4总是大于0,所以x0时,两边乘x：x-x+3

x+3/x-1
x+3/x-1<0 怎么解?急

x+3/x-1
(x-x+3)/x<0 当x<0时,两边乘x：x-x+3>0,因为x-x+3=(x-1/2)+11/4总是大于0,所以x<0 当x>0时,两边乘x：x-x+3<0,因为x-x+3=(x-1/2)+11/4总是大于0,所以无解所以原不等式的解是x<0

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