i want to plot this without ignoring the img parts, what should i do ?

for i=1:7;
k=[-3:1:3];
w=2;
t=1:.01:5;
ak=1+k(i)*1i;
X=ak*exp(k(i)*w*t*1i);
figure(1);subplot(4,2,i);
figure(1);plot(t,X);
end

Answer 1

[José-Luis]

There's some spurious looping in your code. You might want to look into that. But that's another question. To answer what you specifically asked change:

 plot(t,X);

to:

 plot3(t,real(X),imag(X));

[Walter Roberson]

plot3() like that is probably the best answer if t must be represented. However, sometimes what is wanted in such a situation is instead

   plot(real(X), imag(X))

which you can abbreviate as

plot(X)

when X is known to have imaginary components.