The Mandelbrot Set and Julia Sets

Change of Variables

Take z = v/(an)1/n. Then
    anzn + an-1zn-1 + ... + a1z + a0
    = an(v/(an)1/n)n + an-1(v/(an)1/n)n-1 + ... a1(v/(an)1/n) + a0
    = vn + (an-1/an(n-1)/n)vn-1 + ... + (a1/an1/n)v + a0
Polynomials with first coefficient 1 are called monic. This change of variables shows we may assume the polynomial function is monic.

Return to Change of Variables.