close all
clear all
clc

T = 0.01;
t = 0:T:5;
v_a = [-1,0,1];
om = 2*pi;

for a = v_a
    x = 100*exp((a+1i*om)*t);

    figure
    subplot(2,4,1)
    plot(t,abs(x))
    xlabel('t')
    title('abs(x(t))')
    grid
    subplot(2,4,2)
    plot(t,angle(x))
    xlabel('t')
    title('angle(x(t))')
    grid
    
    %figure
    subplot(2,4,5)
    plot(t,real(x),t,abs(x),t,-abs(x))
    grid
    xlabel('t')
    title('real(x(t))')
    subplot(2,4,6)
    plot(t,imag(x),t,abs(x),t,-abs(x))
    grid
    xlabel('t')
    title('imag(x(t))')

    %figure
    subplot(1,2,2)
    plot3(t,real(x),imag(x))
    grid
    xlabel('t')
    ylabel('real(x)')
    zlabel('imag(x)')
    title('x(t)')
end