求满足不等式arccos2x<arccos(1-x^2)的x的取值范围 3Q
问题描述:
求满足不等式arccos2x<arccos(1-x^2)的x的取值范围 3Q
答
1>2X>1-X^2>-1
-1+√2
求满足不等式arccos2x<arccos(1-x^2)的x的取值范围 3Q
1>2X>1-X^2>-1
-1+√2