It because of Fundamental theorem of algebra - Wikipedia, the free encyclopedia
Hebrew link:
המשפט היסודי של האלגברה – ויקיפדיה
k=0,1,2,3 is when we find the roots of z^4
we dont have this situation
here
why they do it here
we equalize the angles
and the "r"s
??
so we have some value for the "r" and the angle
why k=0..3
its not finding roots of some z^4
?
It because of Fundamental theorem of algebra - Wikipedia, the free encyclopedia
Hebrew link:
המשפט היסודי של האלגברה – ויקיפדיה