Scale roots of polynomial

`b = polyscale(a,alpha)`

`b = polyscale(a,alpha)`

scales
the roots of a polynomial in the *z*-plane, where `a`

is a vector containing the polynomial
coefficients and `alpha`

is the scaling factor.

If `alpha`

is a real value in the range `[0 1]`

, then the roots of `a`

are
radially scaled toward the origin in the *z*-plane.
Complex values for `alpha`

allow arbitrary changes
to the root locations.

Was this topic helpful?