cosx=3a+1/a-3,求a的取值范围
问题描述:
cosx=3a+1/a-3,求a的取值范围
答
-1=0
a=3
分母不等于0
a3
(3a+1)/(a-3)
cosx=3a+1/a-3,求a的取值范围
-1=0
a=3
分母不等于0
a3
(3a+1)/(a-3)