00:01
Okay, so we're given our matrix a, and then we want to concatenate it with the 2x2 identity, right? matrix a is the 2x2 matrix.
00:09
So the identity is just a matrix with ones down the main diagonal and zeros everywhere else.
00:14
We put this vertical line next to a, and then we put our identity matrix.
00:18
Now, we are going to transform this into reduced row echelon form.
00:23
So what we want is what we want to have a 1, right? basically, we want to convert the left -hand side here to the identity.
00:30
And then what we end up with on the right -hand side is going to be our inverse matrix.
00:36
So to do so, we want a one again in our first term.
00:42
Here's let's go ahead and divide row, well, dividing row 1 by 6 is multiplying row 1 by 1 6th.
00:49
So we can only multiply by a constant.
00:52
So we're going to multiply row 1 by 1 6th...