Scalar and Matrix Multiplication

Question 1

Which of the following statements are true about inverse matrices?

Revolt · Accepted Answer

If A and B are inverse matrices, then A and B must be square matrices.; The determinant of a singular matrix is equal to zero.; If A and B are inverse matrices, then .; Any zero matrix does not have an inverse.; If B = A–1, then A = B–1.

Question 2

Question 2

Revolt · Accepted Answer

-1

Question 3

Question 5

Revolt · Accepted Answer

are

Question 4

Now calculate BA: Find d11 = d12 = d21 = d22 =

Revolt · Accepted Answer

Part 2: 0; Part 3: 0; Part 4: 1

Question 5

Question 10

Revolt · Accepted Answer

is commutative

Question 6

a = b = c = d =

Revolt · Accepted Answer

Part 2: -3; Part 3: -1; Part 4: 1

Question 7

c11 = c12 = c21 = c22 = So the matrices inverses of one another.

Revolt · Accepted Answer

Part 1: 1; Part 2: 0; Part 3: 0; Part 4: 1

Question 8

Find the elements of D.a =

Revolt · Accepted Answer

Part 1: -9; Part 2: 7; Part 3: 12; Part 4: -5; Part 5: 4; Part 6: 7; Part 7: 3; Part 8: -2; Part 9: -4; -9

Question 9

Select the matrix that is the inverse of:

Revolt · Accepted Answer

Answer image: https://r03.core.learn.edgenuity.com//media.edgenuity.com/EVresources/3111-06-54-20-06-task/mc001-4.jpg

Question 10

Use your knowledge of inverses and matrix multiplication to answer the following:AB =

Revolt · Accepted Answer

I

Scalar and Matrix Multiplication Answers

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