class='bold'>class='bold'>Last row

And I didn't touch on it in that video, but there is also such a thing as a lower triangular, that you might have guessed how it looks.

The second row minus the first row is going to be equal to 1 minus 1 is 0. So in this case the constant is just 1. So 1 minus 1 is 0.

But in the class='bold'>last day of class,

And then let me do the class='bold'>class='bold'>last row in a different color for fun.

Once again, we have another situation where all of the entries below the main diagonal are 0. What's the determinant of this guy right here? And what you might say hey, what about the rest of that row?

On the class='bold'>final day of class, the teacher brought in a few outside observers,

The leading coefficient of the first row is 1 2 is the leading coefficient of the second row 4 is the leading coefficient of the third row, and the class='bold'>class='bold'>last row does not have a leading coefficient.

And maybe you are not surprised, but all of the best pots in the class='bold'>final day came from this half of class.

So let's say that X is equal to a, b, c let's just do, let's make the third row the row we're going to use to determine our determinant. a, b, c, d, e, f actually let me do the middle row, because I don't want to make you think it always has to be the class='bold'>class='bold'>last row.

So what's the determinant of A prime going to be?

Row 2 minus row 1.

So the second row minus the first row.

Just replace this row with this row plus the first row.

Let's replace this row with this row minus 2 times that row.

Let me replace the second row with 2 times the first row minus the second row.

And then row 2 minus row 1.

The third row minus 3 times the first row.

Well, this was one row, and this is the second row, this is the third row, and this is the fourth row.

It's the third row minus 3 times the first row.

This row is the same as this row.

And let's replace our second row with the second row minus the first row.

What I could do is I can replace this row with this row minus this row.

So what's the third row minus the first row?

I'm going to subtract 2 times row two from row three.

Get in a line, lady, get in a line please.

Class

Row

So I'm replacing the top row with the top row minus the third row.

And let's replace my first row with the first row plus the second row.

I'm replacing the first row with the first row minus the second row.

And let me replace this class='bold'>class='bold'>last row with the class='bold'>class='bold'>last row minus the middle row.

Because this row, row 1, column 2.

So the first row well, I won't even write the first row.

I'm going to replace the second row with the second row plus the first row.

Now the second row, I'm going to replace it with the first row minus the second row.

What I'm going to do is, this row minus 2 times the first row.

The types of support offered by Opportunities are Education bursaries for boys, girls and young people in beneficiary families attending school between the third grade in primary education and the class='bold'>final grade in upper secondary education.

Keep the whole first row the same. Let's replace the second row with the second row plus the first row.

And let's do it by replacing our blue row, our third row, with the third row minus 2 times the second row.

So then my third row now becomes what the second row was here.

Now, let's replace our first row with the first row minus the third row.

And let me replace row 1 with row 1 minus 2 times row 2.

So let me replace the third row with the third row minus 2 times the second row.

So, what is that? That is in the second row. It's in row two.