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已知正三角形 ABC的顶点 A(1,1), B(1,3),顶点 C在第一象限,若点( x, y)在△ ABC内部,则 z=- x+ y的取值范围是

发布时间:2021-07-19

A.(1-http://picflow.koolearn.com/upload/papers/20140824/20140824042618775344.png,2)

B.(0,2)

C.(http://picflow.koolearn.com/upload/papers/20140824/20140824042618775344.png-1,2)

D.(0,1+http://picflow.koolearn.com/upload/papers/20140824/20140824042618775344.png)

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    B.http://picflow.koolearn.com/upload/papers/20140824/20140824035342516396.png

    C.http://picflow.koolearn.com/upload/papers/20140824/20140824035342547474.png

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