Question

Find the determinant of
1 2 1
0 1 0
0 1 0

Answer 1

Answer:

The determinant of the matrix is 0.

Step-by-step explanation:

Let us use column 1 to find the determinant of the matrix.

The last element of the column is 0. So, the first term is 0.

The second element of the column is 0. So, the second term is 0.

The first element of the column is 1 but 1*0 is 0. So, the first term is 0.

All add up to be 0.