protected GNumber pow(GComplex x) {
GNumber argument = argument();
GNumber factor = modulus().pow(x.re).divide(x.im.multiply(argument).exp());
GNumber angle = argument.multiply(x.re).add(modulus().ln().multiply(x.im));
return GComplex.polar(factor, angle);
}
private GNumber divide(GComplex b) {
GNumber x = re.multiply(b.re).add(im.multiply(b.im));
GNumber y = im.multiply(b.re).subtract(re.multiply(b.im));
GNumber z = b.modulusSquared();
return new GComplex(x.divide(z), y.divide(z));
}