The substitution of re^(itheta) for z in a polynomial p(z). p(z) is then plotted as a function of theta for a given r in the complex plane. By varying r so that the curve passes through the origin, it is possible to determine a value for one root of the polynomial.

Explore with Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Isograph." From MathWorld--A Wolfram Web Resource.

Subject classifications