Poly {pracma} | R Documentation |
Define Polynomial by Roots
Description
Define a polynomial by its roots.
Usage
Poly(x)
Arguments
x |
vector or square matrix, real or complex |
Details
Computes the characteristic polynomial of an (n x n)-Matrix.
If x
is a vector, Poly(x)
is the vector of coefficients
of the polynomial whose roots are the elements of x
.
Value
Vector representing a polynomial.
Note
In Matlab/Octave this function is called poly()
.
See Also
Examples
Poly(c(1, -1, 1i, -1i)) # Solves x^4 -1 = 0
# Wilkinson's example:
roots(Poly(1:20))
[Package pracma version 2.4.4 Index]