Homog. linear system w/ matrix method, help appreciated

Click For Summary
SUMMARY

The discussion centers on solving a homogeneous linear system represented by the matrix equation dx/dt = [[20, 0], [40, 0]] with the initial condition x(0) = [-4, 32]. Participants emphasize the necessity of understanding linear algebra concepts, particularly eigenvalues and eigenvectors, to effectively solve for x(t). A consensus is reached that tackling differential equations without prior knowledge of linear algebra is inadvisable, as it complicates the problem-solving process.

PREREQUISITES
  • Linear algebra fundamentals, including eigenvalues and eigenvectors.
  • Basic understanding of differential equations.
  • Matrix operations and their applications in systems of equations.
  • Familiarity with initial value problems in the context of differential equations.
NEXT STEPS
  • Study linear algebra concepts, focusing on eigenvalues and eigenvectors.
  • Review differential equations, particularly initial value problems.
  • Practice solving homogeneous linear systems using matrix methods.
  • Explore resources on the relationship between linear algebra and differential equations.
USEFUL FOR

Students and educators in mathematics, particularly those studying differential equations and linear algebra, as well as anyone seeking to strengthen their understanding of matrix methods in solving linear systems.

ultrabionic_ang
Messages
7
Reaction score
0

Homework Statement



Solve the system:

dx/dt =
20 0
40 0

with initial value x(0) =
-4
32

so x(t) = [] ?

Homework Equations



I'm not really positive how to do this and how to go about finding x(t). I've looked at wolfram mathematics, and tried following their definitions, but am a bit confused as to how finding eigenvalues/vectors play into finding x(t) I haven't had linear algebra either.

:confused:
 
Last edited:
Physics news on Phys.org
You shouldn't be doing problems like this if you don't know any linear algebra! In fact, it's probably a bad idea to take differential equations before taking Linear Algebra.
 
Well... they don't require lin alg for diff eq at my school... I'm taking linear over the summer
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
Replies
8
Views
3K
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
1
Views
1K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K