MATLAB: Plot am equation with complex number

complexexponential

Hi All; I want to plot an equation: Y=2*exp(-ky)*exp(-iky); Can anyone help me with this!

Is this what you want:

k = 2;
y = linspace(-3,3,500);
i = sqrt(-1);
Y=2*exp(-k*y).*exp(-i*k*y); 
realy = real(Y);
imagy = imag(Y);
plot(realy, imagy, 'b*-');
grid on;

symbolic toolbox (MuPAD)

syms t w
expr=exp(1i*t*w*2)*exp(1i*t*w*3);
result = evalin(symengine,['simplify(' , char(expr),',exp)']);

"smallest" is not defined for complex numbers. "negative" is not defined for complex numbers either.

You can compare real parts, or you can compare imaginary parts, or you can compare magnitudes.

[vals, idx] = min(real(E));
E(idx)

[vals, idx] = min(imag(E));
E(idx)

[vals, idx] = min(abs(E));
E(idx)