Ax=b and null space.
本讲继续上一讲，通过消元法，进一步阐述零空间的求解。A的特解为
$$N=x = c \begin{bmatrix} -F \\\ I \end{bmatrix}$$
- Matrix multiplication: (4 ways!)
- Inverse of
$ A, AB, A^T $ - Gaiss-Hordan / Find $A^{-1}$
Permutation, transpose and space $R^n$
Column space of A: solving Ax = b Null space of A
Linear Equations vs line and pland vs vectors.
