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设平面区域D是由双曲线 http://picflow.koolearn.com/upload/papers/20140824/20140824005812076577.png的两条渐近线和直线 http://picflow.koolearn.com/upload/papers/20140824/20140824005812092593.png所围成三角形的边界及内部.当 http://picflow.koolearn.com/upload/papers/20140824/20140824005812108556.png时, http://picflow.koolearn.com/upload/papers/20140824/20140824005812123540.png的最大值为(    ).

发布时间:2021-07-20

A.12

B.10

C.8

D.6

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