x减一分之x平方减2x减3大于等于x的解集
问题描述:
x减一分之x平方减2x减3大于等于x的解集
答
(x2-2x-3)/(x-1)>=x
[(x2-2x-3)-x(x-1)]/(x-1)>=0
(-x-3)/(x-1)>=0
(x+3)/(x-1)