+1886 Please show all working out
Find the inverse of the given 3x3 matrix.
\(Please\space show\space all\space working\space out\\ (Key\space word\space is\space all)\\ C = \begin{bmatrix} 1 && 1 && 0 \\ 2 && 1 && 0 \\ 2 && 1 && 1 \end{bmatrix}\\ \space \space \space \space \space \space \space \space \space \space What \space is \space C^{-1}?\)
+118677 Hi Omi,
Thanks for that great answer :))
I have seen that method uesd, and I have worked through it in parrot fashion, but I have never committed it to memory.
It is a very good method though.
There is a good you tube out there somewhere on it because that is where I amost likely saw it used.
If anyone is interested maybe I could chase it down. ://
On the other hand if EighthMersenePrime needs to know how to do it a different method perhaps he/she would like to say so. 
+1886 If there is another way to solve this I would like to know, please. 
+1886 Is this the similar video you found?
https://www.khanacademy.org/math/algebra-home/alg-matrices/alg-determinants-and-inverses-of-large-matrices/v/inverting-matrices-part-3
+1886 If you click the youtube logo on the bottom right, it should take you to the same video but on youtube, so it might be the one you found.
