Question

http://prntscr.com/3j41t4

Answer 1

why not?

Answer 2

nvm i missed that

Answer 3

what is the condition to be invertible of a matrix?

Answer 4

if its 0 it can't be inverse

Answer 5

oh, you fail that question? hahaha...
no, if det = 0, not its =0

Answer 6

and det = 11 so that it is invertible.

Answer 7

oh haha..... sorry :( i just started doing this and its confusing

Answer 8

thanks loser!

Answer 9

hahahaha ok, that's perfectly ok, I failed my final linear algebra yesterday!! still not pass the bad felling

Answer 10

oh hope you pass it next time and good luck :)

Answer 11

hahaha.. just failed on final, still past the cost with a B