来自姜先果的问题
若当P(m,n)为圆x^2+(y-1)^2=1上任意点,不等式m+n+C≥0恒成立,则C的取值范围是(A.[-1-(2)^(1/2),2^(1/2)-1]B.[2^(1/2)-1,2^(1/2)+1]C.[-∞,-(2)^(1/2)-1]D.[2^(1/2),+∞]
若当P(m,n)为圆x^2+(y-1)^2=1上任意点,不等式m+n+C≥0恒成立,则C的取值范围是(
A.[-1-(2)^(1/2),2^(1/2)-1]
B.[2^(1/2)-1,2^(1/2)+1]
C.[-∞,-(2)^(1/2)-1]
D.[2^(1/2),+∞]
1回答
2020-08-2500:00