- 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
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- 1 8, 1 4, 1 2, 3 4,7 8英寸分别是多少厘米? - 知乎
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 sequence gives the next term In other words, an=a1+d (n−1) Arithmetic Sequence: d=1 8
- Mathematics Stack Exchange
Let x1,x2,x3,x4 x 1, x 2, x 3, x 4 denote the four roots of the equation x4 + kx2 + 90x − 2009 = 0 x 4 + k x 2 + 90 x 2009 = 0 If x1x2 = 49 x 1 x 2 = 49, then find the value of k k
- 空调一级能效和三级能效开10小时，能差多少电费？ - 知乎
空调制冷+制热全年耗电量相差794-636=158度电 总结 海尔1 5匹空调，一级比三级年省电159度电 格力1 5匹空调，一级比三级年省电158度电 购买建议：空调使用寿命基本在5~10年，如果你在北方，空调使用少，每年只在夏季开2~3个月空调，这期间总耗电量大约相差1000度。
- abstract algebra - Prove that 1+1=2 - Mathematics Stack Exchange
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 $1+1=2$ Can you think of some way to
- 游戏评测的 1% 最低帧（1% Low FPS）是什么意思？ - 知乎
2、最高性能 电脑性能冗余越大，1%就越接近平均帧。 通常来说，体验派的3A大作比如赛博朋克2077、荒野大镖客2，1%LOW在50以上时，就能带来不错的游戏体验。 而偏向PVP或者竞技类的游戏，需要高操作和专注力的，比如CSGO、LOL、赛车类的例如地平线、尘埃、F1。
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