Matrices Intro Video

Which comes first when saying the order (or dimensions) of a matrix?

• Row

• Column

What does A₂₃ mean?

• Number in the 2nd column, 3rd row

• Number in the 2nd row, 3rd column

What is element A₁₂?

• 6

• 3

• 7

• 2

What is element A₂₁?

• 6

• 2

• 7

• 3

What is the order (or dimensions) of the matrix?

• 4x3

• 4x4

• 3x3

• 3x4

What is the element B₁₁?

• 4

• -4

• -2

• -7

What is the element B₂₃?

• 4

• -4

• -2

• -7

What is the element B₁₄?

• -7

• -2

• -4

• 4

What is the element B₃₄?

• -7

• -2

• -4

• 4

Rate yourself on identifying the order (or dimensions) and elements of a matrix!

• 1: I'm lost

• 2: I sorta get it

• 3: I got it

• 4: I could teach someone else