Lu 分解

https://baike.baidu.com/item/lu分解/764245

https://blog.csdn.net/billbliss/article/details/78559289
https://blog.csdn.net/u010945683/article/details/45803141

https://ww2.mathworks.cn/help/matlab/ref/lu.html
http://libai.math.ncu.edu.tw/webclass/matrix/ch1_7/
https://albertlidesign.github.io/post/LinearAlgebra(1)/

http://zone.ni.com/reference/zhs-XX/help/371361R-0118/gmath/lu_factorization/

https://reference.wolfram.com/language/ref/LUDecomposition.html.zh?source=footer

https://bbs.huaweicloud.com/blogs/detail/284939

http://math.itdiffer.com/lu-decomposition.html
https://www.its203.com/article/billbliss/78559289
https://baike.sogou.com/m/fullLemma?lid=70184879
https://codeantenna.com/a/wMAn0CVHWE
https://www.google.com/patents/CN102426619B?cl=zh
https://www.shuzhiduo.com/A/LPdoR0DE53/
http://www.360doc.com/content/17/0316/10/11290363_637294473.shtml

https://www.xigewang.com/629.html
https://mxncalc.com/zh/lu-factorization-calculator
https://www.luobojianzhan.com/p/285069.html
https://support.minitab.com/zh-cn/minitab/19/macro-library/macro-files/math-macros/determat/


> Top 20 ways make money online ( Make $ 100 USD-500 USD a day)

> Những công việc kiếm 1 triệu Đô ($1.000.000) (Cách kiếm tiền 1 triệu đô la)
> Top 20 ways make money online ( Make $ 100 USD-500 USD a day)