Matrix
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Matrix and Matrix multiplicationMath/Linear algebra 2019. 10. 10. 16:54
1. Overview 2. Description 2.1 Notation $$\boldsymbol{A}=\begin{pmatrix} 1 & 6 & 0 \\ 7 & 2 & 4 \\ 4 & 1 & 1 \end{pmatrix}$$ $$a_{1,2}=6$$ 2.2 Block matrices $$\boldsymbol{A}=\begin{pmatrix} \boldsymbol{D} & \boldsymbol{0} \\ \boldsymbol{1} & \boldsymbol{D} \end{pmatrix}=\begin{pmatrix} 3 & 0 & 0 & 0\\ 0 & 4 & 0 & 0\\ 1 & 1 & 3 & 0\\ 1 & 1 & 0 & 4 \end{pmatrix}$$ $\boldsymbol{D}=\begin{pmatrix} ..