k=9;
y=1:1:k;
y=2.^y;
x=zeros(k,2);
for i=4:k
    A=ones(y(i),y(i));
    tic 
    matrixmult(A,A);
    x(i,1)=toc;
    tic
    A*A;
    x(i,2)=toc;
end
x
hold on
plot(log(y),log(x(:,1)))
plot(log(y),log(x(:,2)))
legend('matrixmult','*')
xlabel('Dimension Testmatrix')
ylabel('Laufzeit')
title('Vergleich * mit matrixmult')