函数y=x-1分之根号x中,自变量x的取值范围是

2025-06-22 14:33:55
推荐回答(2个)
回答1:

y=√(x-1)/(x+2)
(x-1)/(x+2)≥0
(x-1)(x+2)≥0
x≥1且x<=-2
自变量x的取值范围是:(-无穷,-2]U[1,+无穷)
满意请采纳。

回答2:

x大于等于0,且,x不等于1