设E为平面上以A(4,1),B(-1,-6),C(-3,-2)为顶点的三角形区域(包括边界),则z=4x-3y的最大值与最小值分别为A14,-18 B-14,-18 C18,14 D18,-14我错了,C(-3,2)
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![设E为平面上以A(4,1),B(-1,-6),C(-3,-2)为顶点的三角形区域(包括边界),则z=4x-3y的最大值与最小值分别为A14,-18 B-14,-18 C18,14 D18,-14我错了,C(-3,2)](/uploads/image/z/6274802-2-2.jpg?t=%E8%AE%BEE%E4%B8%BA%E5%B9%B3%E9%9D%A2%E4%B8%8A%E4%BB%A5A%284%2C1%29%2CB%28-1%2C-6%29%2CC%28-3%2C-2%29%E4%B8%BA%E9%A1%B6%E7%82%B9%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E5%8C%BA%E5%9F%9F%EF%BC%88%E5%8C%85%E6%8B%AC%E8%BE%B9%E7%95%8C%EF%BC%89%2C%E5%88%99z%3D4x-3y%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%8E%E6%9C%80%E5%B0%8F%E5%80%BC%E5%88%86%E5%88%AB%E4%B8%BAA14%2C-18+B-14%2C-18+C18%2C14+D18%2C-14%E6%88%91%E9%94%99%E4%BA%86%EF%BC%8CC%28-3%2C2%29)
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