polychar¶
Purpose¶
Computes the characteristic polynomial of a square matrix.
Format¶
-
c =
polychar(x)¶ Parameters: x (NxN matrix) – data. Returns: c ((N+1)x1 vector) – coefficients of the Nth order characteristic polynomial of x:
\[p(x) = c[1]*x^n + c[2]*x^{(n-1)} + ... + c[n]*x + c[n+1];\]
Remarks¶
The coefficient of \(x^n\) is set to unity (\(c[1]=1\)).