Scalar and Matrix Multiplication Answers

Choose one:

Multiply: b1 = b2 = b3 =

b2 =

b3 =

c21 =

c22 =

d11 = ⇒ 0

d12 =

d21 =

d22 =

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Which products can be found by matrix multiplication?

Given the matrices: What is the size of the product C = AB? x

Multiply the matrix representing the vertices of the rectangle to transform the figure.What are the coordinates of the resulting figure? (0, 0), (4, 0), (4, 4), (0, 2)(0, 0), (–4, 0), (–4, –4), (0, 2)(0, 0), (4, 0), (4, –4), (0, –2)(0, 0), (–4, 0), (–4, -4), (0, –2)

The following transformation uses both scalar and matrix multiplication.What are the coordinates of the resulting figure?

Given that AI = A, if A is a 3 x 3 matrix, what is the identity matrix?

Multiplies every element of a matrix by the same number: Requires two matrices that must be the same size: Uses both multiplication and addition to find the result: Multiplies the row of one matrix by the column of another:

x

Do these procedures yield the same result?1. First do the scalar multiplication, then do the matrix multiplication.2. First do the matrix multiplication, then do the scalar multiplication.