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- What does $QAQ^{-1}$ actually mean? - Mathematics Stack Exchange
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 and can't seem to de
- Why is $1 i$ equal to $-i$? - Mathematics Stack Exchange
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- Word，插入多级列表，但是改了1. 1，第二章的2. 1也变成1. 1，随着改变而改变，这种情况怎么处? - 知乎
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】——【定义新多级列表】，找到相应的位置进行修改
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- 卡路里、千焦、大卡傻傻分不清楚？关于热量看这一篇就够了
千焦和千卡的换算关系是：1000千焦=238 9大卡，1 大卡（千卡）=4 18千焦（KJ），一般千焦换算成大卡可以直接除以4 18来计算如果要粗略计算热量，直接除以4即可。
- I have learned that 1 0 is infinity, why isnt it minus infinity?
92 The other comments are correct: 1 0 1 0 is undefined Similarly, the limit of 1 x 1 x as x x approaches 0 0 is also undefined However, if you take the limit of 1 x 1 x as x x approaches zero from the left or from the right, you get negative and positive infinity respectively
- what is 1 - 1 2 + 1 3 - 1 4 + 1 5 - 1 6 + 1 7 - 1 8 +1 9
Please provide additional context, which ideally explains why the question is relevant to you and our community Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc
- How can 1+1=3 be possible? - Mathematics Stack Exchange
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