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若实数x、y满足不等式组http://picflow.koolearn.com/upload/papers/g02/20110601/201106011411567011233.gif,则w=http://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156716942.gif的取值范围是

发布时间:2021-07-16

A.[-1,http://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156763876.gif

B.[http://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156795898.gifhttp://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156795876.gif

C.[http://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156810898.gif,+∞)

D.[http://picflow.koolearn.com/upload/papers/g02/20110601/20110601141156841898.gif,1]

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