![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/447223/image.png)
how to plot real and imag parts for this signal x(t) = cos(t/4)+cos(3*t/4)
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Nawaf al raiqi
on 5 Dec 2020
Answered: Image Analyst
on 5 Dec 2020
x = cos(t/4)+cos(3*t/4)
for this signal how i plot the real and imag parts
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Accepted Answer
Image Analyst
on 5 Dec 2020
Why do you think there might be any imaginary parts?
Try this:
t = linspace(-2*pi, 2*pi, 1000);
x = cos(t/4)+cos(3*t/4);
plot(t, x, 'b-', 'LineWidth', 2);
grid on;
xlabel('t', 'FontSize', 20);
ylabel('x', 'FontSize', 20);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/447223/image.png)
but if t were complex, you could plot real(x) and imag(x) instead of x.
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