May 11, 2015 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …

Apr 28, 2020 · 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 repeatedly …

Apr 28, 2024 · 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，看看小雨的威力 …

1 is supposed to be an inverse matrix. I'll add that info into the question – Eenoku Commented Oct 22, 2016 at 22:37 @JMoravitz yes, it's usually defined by AA−1 = I =A−1A A A − 1 = I = A …

Why is 1 1 not considered a prime number? Or, why is the definition of prime numbers given for integers greater than 1 1?

The reason why 1∞ 1 ∞ is indeterminate, is because what it really means intuitively is an approximation of the type (∼ 1)largenumber (∼ 1) l a r g e n u m b e r. And while 1 1 to a large …

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?

I'm working on a double induction problem with the following prompt: Prove by induction on n n that for any real number q> 1 q> 1 and integer n ≥ 0 n ≥ 0:

Nov 4, 2024 · 二：一加13（1加十三手机）优点 强大的性能配置：搭载了骁龙8至尊版移动平台，这是高通最新一代的旗舰级处理器，采用台积电第二代3nm工艺制程，CPU则采用了高通自 …

把1英寸分成8等分: 1/8 1/4 3/8 1/2 5/8 3/4 7/8 英寸。 This is an arithmetic sequence since there is a common difference between each term. In this case, adding 18 to the previous term in the …