Matrix Operations and Comparisons Quiz 3/28

What is a matrix?

• A single number

• A rectangular array of numbers arranged in rows and columns

• A circular arrangement of numbers

• A sequence of numbers

How do you compare the sizes of two matrices?

• By comparing the sum of their elements

• By comparing the number of rows and columns in each matrix

• By comparing their determinants

• By comparing their trace

What is the result of adding two matrices of the same size?

• A matrix of the same size with each element being the sum of corresponding elements

• A single number

• A matrix of double the size

• A matrix with elements multiplied by each other

Which of the following is a type of matrix?

• Scalar matrix

• Vector matrix

• Identity matrix

• Polynomial matrix

• The sum of all elements in the matrix

• The determinant of the matrix

• The trace of the matrix

How do you multiply a matrix by a scalar?

• Add the scalar to each element of the matrix

• Multiply each element of the matrix by the scalar

• Subtract the scalar from each element of the matrix

• Divide each element of the matrix by the scalar

Which of the following matrices is a square matrix?

• Yes, they can be added

• No, they cannot be added

• Only if they are square matrices

• Only if they have the same determinant