巧用“∫b a f(x)dx、∫∫D f(x,y)dxdy 是一个常数”解题

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1672-612x|34|8|35-38

ISSN: 1672-612x

Source: 绵阳师范学院学报, Vol.34, Iss.8, 2015-01, pp. : 35-38

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Abstract