00:01
So, we need to find the determinant of matrix a that is equal to we have given here matrix a is 3611 that is first row.
00:14
Second row we have given here that is 53 0 .51.
00:23
Third row is 2426 and last row is 91684.
00:35
Now, first we need to apply here the column operation that is c1 is c1 -3c3.
00:48
So from here we will write that is 0611 we need to write here that is 7x2 3 1x2 1.
01:03
Next row become minus 4 4 2 6 and last row become here that is minus 15 16 8 4.
01:21
Now we need to apply here the second operation that is c2 is 3c2 -6c3.
01:35
Now after simplify this we will get we need to apply now the formula that is c2 is c2 -6c3.
01:45
Then we will get 0011 7x2 0 1x2 1.
02:00
Next become minus 4 minus 8 2 6 and last row become minus 15 minus 32 8 4.
02:14
Now we need to apply here the last operation that is c4 is c4 -c3...