plotting complex exponential function

Hi friends,

I am tring to plot the graph of

y = (1*e^-i20*pi * t) + (4*e^i20*pi *t ) where t= 5:-0.1:0

can you please help me in this case.

thank you.

Answer 1

[VBBV]

 t = 5:-0.1:0 ;
y = 1*exp(-i*20*pi * t) + (4*exp(i*20*pi *t ) );
plot(t,real(y))

[EDEN]

how will the output look?

can u share it here

[EDEN]

i am getting a constant y if i use the code u made bro.

[VBBV]

t = 5:-0.01:0 ;
for i = 1:length(t)
y(i) = 1*exp(-i*0.2*pi * t(i)) + (0.44*exp(i*0.2*pi *t(i) ) );
end
plot(t,real(y))

[VBBV]

t = 5:-0.01:0 ;
%for i = 1:length(t)
y = 1*exp(-i*0.2*pi.*t) + (0.44*exp(i*0.2*pi.*t ) );
plot(t,real(y),'linewidth',2)

Here's what i get

[EDEN]

Thank you so much brother, i do really appreciate.

Answer 2

[James Tursa]

E.g., maybe this is what you need

y = 1*exp( -i20 *pi * t ) + 4*exp( i20 * pi * t );
plot(t,y);

Although it is not clear what i20 is. A variable name? Or is this supposed to be i*20? In which case you might want to plot real(y) instead of y.

[EDEN]

i20 is 20 with the imaginary i