Understanding Determinants of 2 x 2 Matrices

  • Context:
  • Thread starter Thread starter ertagon2
  • Start date Start date
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
Sign up Log in
1 reply · 1K views
ertagon2
Messages
36
Reaction score
0
Can some1 help me with these?
View attachment 8066
 

Attachments

  • maths62_2.png
    maths62_2.png
    8.7 KB · Views: 136
Physics news on Phys.org
As with your last post most of these are plug-n-chug. Do you even know the basics definitions? How do you define the determinant of a 2 x 2 matrix? It's a simple definition!

And if you can't answer 7 as well then you shouldn't even be in the class.

Please show any work that you have been able to do for these.

-Dan
 

Similar threads

Undergrad Show that ##\mathbb{C}## can be obtained as 2 × 2 matrices
  • Karl Karlsson
  • · Replies 14 ·
  • Linear and Abstract Algebra
Replies
14
Does $(A^T)^2=(A^2)^T$ for $2\times 2$ matrices?
  • karush
  • · Replies 1 ·
  • Linear and Abstract Algebra
Replies
1
Checking the linear independence of elements of 2 X 2 matrices
  • Pushoam
  • · Replies 7 ·
  • Calculus and Beyond Homework Help
Replies
7
Proving inverse of a 2 x 2 matrix is really an inverse
  • member 731016
  • · Replies 3 ·
  • Precalculus Mathematics Homework Help
Replies
3
Undergrad Eigenvalues of 2 matrices are equal
  • gopi9
  • · Replies 1 ·
  • Linear and Abstract Algebra
Replies
1
Graduate Understanding Determinants of Matrices over Commutative Rings
  • Bleys
  • · Replies 5 ·
  • Linear and Abstract Algebra
Replies
5
Finding All $2\times 2$ Matrices That Satisfy $A^2=A$
  • juantheron
  • · Replies 1 ·
  • Linear and Abstract Algebra
Replies
1
Undergrad How to Get Final Fisher Matrix from 2 Matrices
  • fab13
  • · Replies 11 ·
  • Set Theory, Logic, Probability, Statistics
Replies
11
Order of Group of 2 x 2 Matrices
  • e(ho0n3
  • · Replies 7 ·
  • Calculus and Beyond Homework Help
Replies
7
Undergrad Can the 'Determinant' be Reversed for 2-by-2 Matrices?
  • scikidus
  • · Replies 1 ·
  • Linear and Abstract Algebra
Replies
1