00:02
Now, solution of this question given that x1, x2, x3, x4, x1, x2, x3, x1, x2 and z.
00:17
So, this is equal to 234, 234, 100, 100, this is 18 and this is equal to 63, 20, 10, 15 and minus 1, minus 6, minus 2, 0, 1, 0, 0, 1, 0.
00:44
Here the most negative element in the bottom row will indicate the pivot element.
00:49
So, here minus 6, so we have in column 2, so i am taking second column as a pivot column and for pivot row the least positive result when last column divided by pivot column will be indicate so, so minimum, so minimum 18 divided by 3, 15 divided by 3 is equal to 50 divided by 3.
01:16
So, second row, so second row is pivot row, second row is pivot row.
01:25
So, r2, now r2 is r2 divided by 1 divided by 3, so x1, x2, x3, x1, x2, z, this is equal to 234, 100, 18 and this is equal to 21, 2 divided by 3, 0, 1 divided by 3, 0 and 5 and this is equal to minus 1, minus 6, minus 2, 0, 0, 1, 0.
01:58
Now r1, r1 minus 3r2 and r3, hence r3 plus 6r2 then x1, x2, x3, x1, x2, z, so this is minus 40, 21, 21 minus 103 and this is equal to 21, 2 divided by 3, 0, 1 divided by 3, 0, 5 and this is 11, 0, 2, 0, 2, 1, 30...