Leverrier. How do I plot this function?

How do i write this in MATLAB and also display it?

A is the matrix input.

I only know the coefficients who are generated n times.

a=size(A,1);

M=zeros(a);

c=zeros(1,a+1);

c(1)=1;

for k=2:a+1

M=A*M+c(k-1)*eye(a);

c(k)=-1/(k-1)*trace(A*M);

end