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Welch Labs
Imaginary Numbers Are Real [Part 1: Introduction]
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Janusz
办美国文凭加拿大文凭澳洲文凭英国文凭学位证毕业证成绩单
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![Let x∈R and letP=[(1 1 1 0 2 2 0 0 3)],Q=[(2\&x\&x@0\&4\&0@x\&x\&6)]\\](http://i.ytimg.com/vi/Z399jgfOWag/mqdefault.jpg "Let x∈R and letP=[(1 1 1 0 2 2 0 0 3)],Q=[(2\&x\&x@0\&4\&0@x\&x\&6)]\\")
![Logical Question [62] - Numbers of balls of each color puzzle](http://i.ytimg.com/vi/GHAyLlfFE48/mqdefault.jpg "Logical Question [62] - Numbers of balls of each color puzzle")
![[ A. NO CHANGE; B. Even so,; C.… ]](http://i.ytimg.com/vi/WIhnGAXE9l4/mqdefault.jpg "[ A. NO CHANGE; B. Even so,; C.… ]")
![Show that A and B are not similar matrices. A=[[ 1 2; 3 4 ]…](http://i.ytimg.com/vi/CvgV4GX7ER4/mqdefault.jpg "Show that A and B are not similar matrices. A=[[ 1 2; 3 4 ]…")
![Show that A and B are not similar matrices. A=[[ 1 0 1; 2 0 2; 3 … ]](http://i.ytimg.com/vi/7vjcIST6ZAg/mqdefault.jpg "Show that A and B are not similar matrices. A=[[ 1 0 1; 2 0 2; 3 … ]")
![Find the inverse of the 2 ×2 matrix (if it exists). [[ 1 -2; -3 2… ]](http://i.ytimg.com/vi/upDeQGnh7nQ/mqdefault.jpg "Find the inverse of the 2 ×2 matrix (if it exists). [[ 1 -2; -3 2… ]")
