-y=根号x2-2x-1的值域(过程)
问题描述:
-y=根号x2-2x-1的值域(过程)
答
答:
-y=√(x^2-2x-1)
=√[(x-1)^2-2]
>=0
y
-y=根号x2-2x-1的值域(过程)
答:
-y=√(x^2-2x-1)
=√[(x-1)^2-2]
>=0
y