# Linear-Algebra-MIT-Gilbert Strang-(L1-L3)

# Lecture 1:

- The purpose of linear algebra is solving linear equations.
- There are two views of a set of linear equations. Row-view and column view(This two are different). Don’t mess it up with row exchange and column exchange(this two are same).
- The solution of a set of linear equation in
**Row-View**is the adjacent point of planes(3D, coplane) or lines(2D). 4D may be an object? Who knows.

4. Row-View: