![Section 5.1](http://s1.studyres.com/store/data/018524370_1-82113b7ca70c157c13fc3737c2cf68d7-300x300.png)
Lecture notes
... by one. 51=5 This matrix is called: Identity, denoted by I, where all its diagonal elements are set to one and the remaining elements to 0. Since this matrix has the same number of columns and rows: AI=A or IA=A ...
... by one. 51=5 This matrix is called: Identity, denoted by I, where all its diagonal elements are set to one and the remaining elements to 0. Since this matrix has the same number of columns and rows: AI=A or IA=A ...