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[几何] 求助:这个图片是哪本书?

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guanmo1 posted 2021-4-28 09:06 |Read mode
5de899a8d401d0ea9d45ae1c2e88a013_0073JGCOzy7jizlbc5D25&690.jpg

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isee posted 2021-4-28 09:22
回复 1# guanmo1


    什么书不知道,但从内容的表达形式可以看了是写给考生的;如果对内容感觉兴趣,我倒是推荐彭翕成的 绕来绕去的向量法。

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色k posted 2021-4-28 09:41
看起来是双栏排版,应该是期刊杂志。

PS1、话说余弦定理在课本上好像就是用向量推的吧,这里反而是说由余弦定理转化为向量,总感觉有点……

PS2、例6后面那结论在旧版论坛就讨论过,如果有下载旧版论坛的存档,可以看 thread-987

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Tesla35 posted 2021-5-6 14:19
信息量太少了。

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力工 posted 2021-5-7 16:11
一看就是某江省的人编的,都是大招神招。汗死

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