有心圆锥曲线的一个动弦性质
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1002-4123|volume|5|30-31
ISSN: 1002-4123
Source: 中学数学教学, Vol.volume, Iss.5, 2016-01, pp. : 30-31
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Abstract