linear_algebra_roomNotes

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Linear Algebra RoomNotes reading notes.

Linear Algebra Basic

Dot product: \(u.v,\theta\)

\(u.v=\vert u\vert.\vert v\vert \cos\theta\)

\(\cos\theta=\frac{u.v}{\vert u\vert.\vert v\vert}\)

Matrix multiple Vector: Ax=b

There are two ways to view Ax=b the row way and the column way. 1. the row way calculate each item of b \[ \]