00:01
Hi, now we are going to find the inverse of the given matrix by using the gauss jordan elimination.
00:09
So, now here the given matrix a is minus 15, 45, minus 3, 4, 55, minus 164, 15, minus 15, minus 215, 640, minus 62, 59, minus 4, 12, 0, 1 and then we have to adjoin the identity matrix on to the right of the original matrix.
00:42
Then we get this matrix and next we have to do r1 as r1 divided by minus 15, then we get this matrix and next we have to do r2 as r2 minus 55 times of r1 and r3 as r3 plus 215 times of r1 and r4 as r4 plus 4 times of r1.
01:03
Then we get this matrix and then we have to do r1 as r1 plus 3 times of r2 and r3 as r3 plus 5 times of r2, then we get this matrix and next we have to do r1 as r1 minus 12 .2 times of r3 and r2 as r2 minus 4 times of r3 and then r4 as r4 minus 0 .8 times of r3, then we get this matrix and then we have to do r4 as r4 divided by minus 1 divided by 15, then we get this matrix and next we have to do r1 as r1 plus 19 divided by 15 times of r4 and then r2 as r2 plus 1 divided by 3 r4, then we get this matrix...