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发布于 2023-11-09 21:35 ImAyx 码字不易 感谢支持 个人博客 imayx.top 1 人赞同了该回答 可以，没影响 发布于 2023-11-10 02:37 查看剩余 1 条回答

It's the sine divided by the cosine, which is exactly the same thing as the famous slope formula "rise over run" So if x is the angle a line through the Origin makes with the positive horizontal …

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Q&A for people studying math at any level and professionals in related fields

如何在输入法里输入这个符号？Google了很多发现都不对

In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical …

Jun 13, 2020 · Is there a formal proof for $(-1) \\times (-1) = 1$? It's a fundamental formula not only in arithmetic but also in the whole of math. Is there a proof for it or is it just assumed?

注1：【】代表软件中的功能文字 注2：同一台电脑，只需要设置一次，以后都可以直接使用 注3：如果觉得原先设置的格式不是自己想要的，可以继续点击【多级列表】——【定义新多级 …