已知实数x`y满足约束条件y≥1,x-3y+5≥0,2x-y≤0,则z=(1/2)的(x+y-2)次方的最大等于( )
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![已知实数x`y满足约束条件y≥1,x-3y+5≥0,2x-y≤0,则z=(1/2)的(x+y-2)次方的最大等于( )](/uploads/image/z/6802174-46-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0x%60y%E6%BB%A1%E8%B6%B3%E7%BA%A6%E6%9D%9F%E6%9D%A1%E4%BB%B6y%E2%89%A51%2Cx-3y%2B5%E2%89%A50%2C2x-y%E2%89%A40%2C%E5%88%99z%3D%EF%BC%881%2F2%EF%BC%89%E7%9A%84%EF%BC%88x%2By-2%EF%BC%89%E6%AC%A1%E6%96%B9%E7%9A%84%E6%9C%80%E5%A4%A7%E7%AD%89%E4%BA%8E%EF%BC%88+%EF%BC%89)
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