Review-1

Front

What is the element in the second row, third column of a matrix?

Back

The element in the second row, third column of a matrix is determined by its position in the matrix. For example, in a matrix R, if the element is 6, then that is the answer.

Front

What must be true in order to ADD two matrices?

Back

The dimensions of the two matrices must be equal.

Front

What are coterminal angles?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. For example, -165° and 195° are coterminal.

Front

How do you convert degrees to radians?

Back

To convert degrees to radians, multiply the degree measure by π/180.

Front

What is the formula for finding the dimensions of a matrix?

Back

The dimensions of a matrix are given in the form 'rows x columns'. For example, a matrix with 3 rows and 2 columns is 3 x 2.

Front

What is a matrix?

Back

A matrix is a rectangular array of numbers arranged in rows and columns.

Front

What is the determinant of a matrix?

Back

The determinant is a scalar value that can be computed from the elements of a square matrix and encodes certain properties of the matrix.

Front

What is the significance of a zero determinant?

Back

A zero determinant indicates that the matrix is singular, meaning it does not have an inverse.

Front

How do you find the element in a specific position of a matrix?

Back

To find the element in a specific position, identify the row and column of that position and locate the corresponding value in the matrix.

Front

What is the relationship between the rows and columns of a matrix?

Back

The number of columns in the first matrix must equal the number of rows in the second matrix for matrix multiplication to be valid.