各边长均为定值的四边形面积何时最大
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1002-4123|volume|6|58-58
ISSN: 1002-4123
Source: 中学数学教学, Vol.volume, Iss.6, 2016-01, pp. : 58-58
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Abstract