Please correct me if I am wrong on any of this, but I am trying to plot a damped/attenuating sine wave of the form y(x,t)=Ae^-alpha(x) * sin(wt-Bx + phi).
Granted the sin is not in the exponential, I've been trying to code this up knowing that travelling waves have spatial as well as temporal dimensions.
The code I have after user input is:
Beta = 2*pi/lambda;
y1(t,:)=A*sin(Beta*x-w*t + phi).exp(-alpha*x)
%A, alpha, w, and phi are user input as well
So I'm getting a "Subscript indices must be either real positive integers or logicals." Where am I going wrong?
Also, I am trying to plot this damped wave - do I need to use plot3? If so, why?