Exploring Matrices and Their Operations

What is the definition of a matrix?

• A matrix is a collection of unrelated data points.

• A matrix is a type of graph used in statistics.

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

• A matrix is a single number used in calculations.

Classify the matrix:

• Identity matrix

• Singular matrix

• Diagonal matrix

• Symmetric matrix

Identify the type of matrix: [3 5 7]

• Square matrix

• Diagonal matrix

• Row matrix

• Column matrix

What is the notation for the element in the 2nd row and 3rd column of a matrix?

• A(2,3)

• A{2,3}

Identify the element a₂₁ in the matrix:

• 5

• 2

• 4

• 3

What are the dimensions of a matrix with 3 columns and 4 rows?

• 4x3

• 5x3

• 3x4

• 4x2

How do you add two matrices?

• Multiply the matrices element-wise.

• Add corresponding elements of the matrices.

• Subtract the matrices element-wise.

• Transpose the matrices before adding.

What is the result of adding the matrices?

• 
• 
• 
• 

What is scalar multiplication?

• The addition of two elements

• The division of a an element by a scalar

• multiply each element of the matrix by that number {Scalar}

If you multiply the matrix [2 3] by 4, what is the result?

• [6 9]

• [0 0]

• [8 12]

• [2 3 4]