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 (\(c[1]=1\)).

Source

poly.src

See also

Functions polymake(), polymult(), polyroot(), polyeval()