Matrix Operations Review

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

What is the result of multiplying the following matrices? 20 15 -10 30 -5 0 and -20 15 -10 30 -5 0

Back

-20 15 -10 30 -5 0

Front

You can multiply a 2X3 matrix by which matrix?

Back

3X12

Front

What is the name of each entry of a matrix?

Back

Element

Front

Find B-A for the following matrices: B = 1 0 1 -4 A = 4 0 -6 0

Back

4 0 -6 0

Front

What is the condition for two matrices to be multiplied?

Back

The number of columns in the first matrix must equal the number of rows in the second matrix.

Front

What is the identity matrix for 2x2 matrices?

Back

I = [1 0; 0 1]

Front

What is the determinant of a 2x2 matrix A = [a b; c d]?

Back

det(A) = ad - bc

Front

What is the transpose of a matrix?

Back

The transpose of a matrix is obtained by swapping its rows and columns.

Front

What is the zero matrix?

Back

A matrix in which all entries are zero.