Matrices Operations Review

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

What do a, b, c and d equal in this matrix addition? a + b = [10, -1], c + d = [-11, 7]

Back

a = 10, b = -1, c = -11, d = 7

Front

What do m, n, p and q equal in this scalar matrix multiplication? 3 * [[5, -3], [4, 2]] = [[m, n], [p, q]]

Back

m=15, n=-9, p=12, q=6

Front

What comes first in the order of matrix dimensions?

Back

Row

Front

You can multiply a 2 x 3 matrix by which matrix?

Back

3 x 12

Front

What is the result of adding two matrices of dimensions 2 x 2?

Back

A 2 x 2 matrix.

Front

What is a scalar in matrix operations?

Back

A scalar is a single number that can multiply a matrix.

Front

What is the identity matrix for 2 x 2 matrices?

Back

[[1, 0], [0, 1]]

Front

What is the determinant of a 2 x 2 matrix [[a, b], [c, d]]?

Back

ad - bc

Front

What is the result of multiplying a matrix by a zero matrix?

Back

The result is a zero matrix of appropriate dimensions.