圆与椭圆只有一个公共点是相切的什么条件

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1672-7495|volume|7|21-21

ISSN: 1672-7495

Source: 上海中学数学, Vol.volume, Iss.7, 2016-01, pp. : 21-21

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Abstract