x-y≤0,x+y-5≥0,y-3≤0
x≤y≤3,x+y≥5
2≤x≤y≤3
(y2-axy+2x2)/x2≥y/x
y^2-axy+2x^2≥xy
y^2-(a+1)xy+2x^2≥0
[-(a+1)]^2-4*2≤0
-1-2√2≤a≤-1+2√2
已知实数xy满足x-y≤0,x+y-5≥0,y-3≤0,若不等式(y2-axy+2x2)/x2≥y/x恒成立
已知实数xy满足x-y≤0,x+y-5≥0,y-3≤0,若不等式(y2-axy+2x2)/x2≥y/x恒成立
则实数a的取值范围是?(y2为y的平方)
则实数a的取值范围是?(y2为y的平方)
其他人气:837 ℃时间:2019-10-10 06:46:43
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