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2020年4月28日 · I'm self-learning Linear Algebra and have been trying to take a geometric approach to understand what matrices mean visually. I've noticed this matrix product pop up …

Intending on marking as accepted, because I'm no mathematician and this response makes sense to a commoner. However, I'm still curious why there is 1 way to permute 0 things, …

2010年8月30日 · There are infinitely many possible values for $1^i$, corresponding to different branches of the complex logarithm. The confusing point here is that the formula $1^x = 1$ is …

2020年6月13日 · 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?

The series does not converge, because as you observe, the partial sums $1,0,1,0,\ldots$ oscillate and do not approach a single limit. There are various ways to assign values to some divergent …

2024年4月28日 · 实际上，天气预报中所说的雨量跟公众了解的积水深度并不能完全等同。 气象上一般把连续24小时，降水量50毫米以上的雨叫暴雨。 我们先以1毫米降水为例，看看小雨的威 …

2013年1月15日 · Possible Duplicate: How do I convince someone that $1+1=2$ may not necessarily be true? I once read that some mathematicians provided a very length proof of …

2020年3月29日 · 其标准定义是：鼠标移动1英寸，屏幕里光标移动多少像素点。 一些高级的鼠标可以切换档位或自定义具体的DPI，比如我的炼狱蝰蛇可以从电脑驱动程序写入我想要 …

2015年5月11日 · 11 There are multiple ways of writing out a given complex number, or a number in general. Usually we reduce things to the "simplest" terms for display -- saying $0$ is a lot …