Matrices Inverse 3 by 3

Find the inverse.

• A

• B

• C

• D

What is the correct order of solving systems of equations?

• Set up the matrix. 2. Find the determinant. 3. Multiply the determinant by the solution matrix.

• Set up the matrix. 2. Multiply [A] *[B] - (the solution matrix) 3. Find the inverse of that answer.

• Set up the matrix. 2. Find the inverse of [A]. 3. Multiply the inverse by the solution matrix.

• Use a calculator.

Which of the following must be true for a matrix to be invertible? Choose all that apply.

• The matrix must be square.

• The determinant must be zero.

• The determinant must not be zero.

• The matrix cannot have any negative entries.

By using Elementary transformation we can find

• Inverse

• Symmetric matrix

• Scalar Matrix

• None

• A

• B

• C

• D

• O

• NONE OF THESE

Find the inverse of the matrix

• A

• B

• C

• D

Find the inverse of the matrix

• A

• B

• C

• D

The multiplicative inverse of matrix A is denoted by:

• Adj A

• |A|

• A^t

• A^-1

what is the correct ans?

• |A|

• Adj A

• 0

•