function wlysemilog
    t=1:0.1:100;
    y=10*t.^2;
    figure(1)
    subplot(2,2,1);semilogx(t,y);title('semilogx')
    subplot(2,2,2);semilogy(t,y);title('semilogy')
    subplot(2,2,3);loglog(t,y);title('loglog')