X,Y为实数,4 X^2+Y^2+XY=1,求2X+Y的最大值 用一般不等式来解,答案为2根号10/5,求过啊我说是用一般不等式啊QAQ
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![X,Y为实数,4 X^2+Y^2+XY=1,求2X+Y的最大值 用一般不等式来解,答案为2根号10/5,求过啊我说是用一般不等式啊QAQ](/uploads/image/z/1661324-68-4.jpg?t=X%2CY%E4%B8%BA%E5%AE%9E%E6%95%B0%2C4+X%5E2%2BY%5E2%2BXY%EF%BC%9D1%2C%E6%B1%822X%2BY%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC+%E3%80%80%E7%94%A8%E4%B8%80%E8%88%AC%E4%B8%8D%E7%AD%89%E5%BC%8F%E6%9D%A5%E8%A7%A3%2C%E7%AD%94%E6%A1%88%E4%B8%BA2%E6%A0%B9%E5%8F%B710%2F5%2C%E6%B1%82%E8%BF%87%E5%95%8A%E6%88%91%E8%AF%B4%E6%98%AF%E7%94%A8%E4%B8%80%E8%88%AC%E4%B8%8D%E7%AD%89%E5%BC%8F%E5%95%8AQAQ)
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