The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the roots of the polynomial have a positive real part, the behavior of the system will be divergent. Given a cell array of vectors that represent polynomials, remove the ones that have roots with positive real components.
Example:
polyIn = {[1 1],[1 -1]}
polyOut = {[1 1]}
since roots([1 -1]) is 1, a positive number.
Solution Stats
Problem Comments
5 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers1743
Suggested Problems
-
1799 Solvers
-
Omit columns averages from a matrix
620 Solvers
-
Back to basics 22 - Rotate a matrix
939 Solvers
-
How many trades represent all the profit?
619 Solvers
-
String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
2081 Solvers
More from this Author96
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
The test set should contain a polynomial with complex roots where the real part is positive, and a polynomial with a positive and a negative root.
Too less test cases
How does [1 1] represent a polynomial? This problem should read "Remove sets with negative numbers" instead.
@Brandon polynomials in MATLAB are represented by a vector of coefficients; see doc roots.
interesting problem