求满足arccos(x-1)>π/2的x的取值范围.
问题描述:
求满足arccos(x-1)>π/2的x的取值范围.
答
arccos(x-1)>π/2
则-1
求满足arccos(x-1)>π/2的x的取值范围.
arccos(x-1)>π/2
则-1