Linear algebra matrices multiplication (transpose)

In summary, the conversation discussed finding the matrix A using the equation (A^transpose)^transpose=A and simplifying the left side by using an identity matrix. The final solution for A was found to be [-2 0; -4 -3].
  • #1
dmoney123
32
1

Homework Statement



We are looking for the matrix A

Homework Equations



(A^transpose)^transpose=A

The Attempt at a Solution



i would start with finding the transpose of the matrix.

-5 0
-8 -7
 

Attachments

  • linear problem.png
    linear problem.png
    845 bytes · Views: 492
Physics news on Phys.org
  • #2
dmoney123 said:

Homework Statement



We are looking for the matrix A

Homework Equations



(A^transpose)^transpose=A

The Attempt at a Solution



i would start with finding the transpose of the matrix.

-5 0
-8 -7

OK, so
[tex]((2A - I)^T)^T = \begin{bmatrix}-5&0\\-8&-7\end{bmatrix}[/tex]

Now what? Use your relevant equation to simplify the left side.
 
  • #3
S0 + identity matrix on left side... =

[-4 0] ... then /2= [-2 0]
-8 -6 ......-4 -3

GOT IT!
 
Last edited:

1. What is the purpose of transposing a matrix in linear algebra?

Transposing a matrix in linear algebra allows for the manipulation and analysis of data in a more efficient manner. It also helps in solving linear systems of equations and finding eigenvalues and eigenvectors.

2. How do you transpose a matrix in linear algebra?

To transpose a matrix in linear algebra, you simply need to switch the rows and columns of the original matrix. This can be done by reflecting the matrix over its main diagonal or by swapping the elements in each row with the corresponding element in the same column.

3. What is the result of multiplying a matrix by its transpose?

The result of multiplying a matrix by its transpose is a symmetric matrix, where the elements are equal to each other across the main diagonal. This is also known as a self-adjoint matrix.

4. Can you transpose a non-square matrix in linear algebra?

Yes, you can transpose a non-square matrix in linear algebra. The resulting matrix will have the same number of rows and columns as the original matrix, but the dimensions will be switched.

5. How does transposing a matrix affect its eigenvalues and eigenvectors?

Transposing a matrix does not change its eigenvalues, but it does change the corresponding eigenvectors. The eigenvectors of the original matrix become the eigenvectors of the transposed matrix, and vice versa.

Similar threads

  • Precalculus Mathematics Homework Help
Replies
3
Views
1K
  • Precalculus Mathematics Homework Help
Replies
2
Views
2K
  • Precalculus Mathematics Homework Help
2
Replies
57
Views
3K
  • Calculus and Beyond Homework Help
Replies
5
Views
930
  • Precalculus Mathematics Homework Help
Replies
32
Views
803
  • Precalculus Mathematics Homework Help
Replies
1
Views
708
  • Precalculus Mathematics Homework Help
Replies
25
Views
963
  • Calculus and Beyond Homework Help
Replies
2
Views
2K
  • Precalculus Mathematics Homework Help
Replies
21
Views
586
  • Math Proof Training and Practice
Replies
2
Views
2K
Back
Top