看实数x,y满足不等式组2x-y-1>=0,3x+y-9=0.则2x+y的最大值为?麻烦给个详解,
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![看实数x,y满足不等式组2x-y-1>=0,3x+y-9=0.则2x+y的最大值为?麻烦给个详解,](/uploads/image/z/999605-29-5.jpg?t=%E7%9C%8B%E5%AE%9E%E6%95%B0x%2Cy%E6%BB%A1%E8%B6%B3%E4%B8%8D%E7%AD%89%E5%BC%8F%E7%BB%842x-y-1%3E%3D0%2C3x%2By-9%3D0.%E5%88%992x%2By%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%BA%3F%E9%BA%BB%E7%83%A6%E7%BB%99%E4%B8%AA%E8%AF%A6%E8%A7%A3%2C)
看实数x,y满足不等式组2x-y-1>=0,3x+y-9=0.则2x+y的最大值为?麻烦给个详解,
看实数x,y满足不等式组2x-y-1>=0,3x+y-9=0.则2x+y的最大值为?
麻烦给个详解,
看实数x,y满足不等式组2x-y-1>=0,3x+y-9=0.则2x+y的最大值为?麻烦给个详解,
A(2,3)
代入2x+y有最大值
=4+3=7
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