若分式2a+2/3a-9的值为正数,为非正数,求a的取值范围
问题描述:
若分式2a+2/3a-9的值为正数,为非正数,求a的取值范围
答
2a+2/3a-9>0
(a+2)/(a-3)>0
a3
2a+2/3a-9≤0
a∈[-2,3)