00:01
Students we are given a question that find a sequence of elementary matrices that can be used to write a matrix in row equal on form okay we are given that matrix so first of all we can observe first row is nothing but minus two one zero second row is three minus four zero third row is a one minus two and minus two so first of all we are supposed to note that the first two sorry the first sequence matrix can be written as first can be written as one zero zero zero zero two second can be written as zero one zero third can be written as zero zero minus one by five and zero okay after that zero zero zero zero zero the second can be written as okay one zero zero zero zero one zero zero and zero one zero zero third row can be written as zero three one zero and fourth row can be written as 0 0 and 1 okay students now the third matrix sequence in the second the third matrix can be written as 1 000 1 0 0 0 0 0 0 0 0 0 and after there 0 0 0 and after the 0 0 0 0 0 0 0 0 okay now the 4 matrix can be written in the form as you can see 1 0 0 0 0 0 0 1 0 0 .00, okay, after that 01, 0, and 2 ,0, 1 ,0, and 4th row can be written as 0 ,0001.
01:46
Okay, students? after that, what we can say, the fifth matrix can be written as 1 ,000, here 0, 1 by 2, and 0, after that, 0 ,0, 0, and 4th row can be written as 0 ,0...