若x>,0y>0,且x+y≤4,则下列不等式中恒成立的?A.1/(x+y)≤1/4 B.1/x+1/A.1/(x+y)≤1/4 B.1/x+1/y≥1 C.√(xy)≥2 D.1/(xy)≥1

来源：学生作业帮助网编辑：六六作业网时间：2024/11/09 05:43:42

若x>,0y>0,且x+y≤4,则下列不等式中恒成立的?A.1/(x+y)≤1/4B.1/x+1/A.1/(x+y)≤1/4B.1/x+1/y≥1C.√(xy)≥2D.1/(xy)≥1若x>,0y>0

若x>,0y>0,且x+y≤4,则下列不等式中恒成立的?A.1/(x+y)≤1/4 B.1/x+1/A.1/(x+y)≤1/4 B.1/x+1/y≥1 C.√(xy)≥2 D.1/(xy)≥1
若x>,0y>0,且x+y≤4,则下列不等式中恒成立的?A.1/(x+y)≤1/4 B.1/x+1/
A.1/(x+y)≤1/4 B.1/x+1/y≥1 C.√(xy)≥2 D.1/(xy)≥1

若x>,0y>0,且x+y≤4,则下列不等式中恒成立的?A.1/(x+y)≤1/4 B.1/x+1/A.1/(x+y)≤1/4 B.1/x+1/y≥1 C.√(xy)≥2 D.1/(xy)≥1
B bbbbbbbbbbbbbbbbbbb