各位大神急求这题解法,详细过程,谢谢!

2024-12-27 09:21:43
推荐回答(2个)
回答1:

y=(x-1)/(x+2)=1-3/(x+2)
x+2>0 3/(x+2)单调减
-3/(x+2)单调增 y=(x-1)/(x+2)=1-3/(x+2)
单调递增 值域为[-2,1)

回答2:

cial media hav