I've got this equation, which I wanted to see a plot of so I put it into Matlab hoping to gain a little insight. Instead I just get a flat surface, which is not what Mathematica shows. Here's the code,
close all; clear all;f=linspace(0,1000,50);t=linspace(0,0.0005,50);[ff,tt] = meshgrid(f,t);x=4-cos(2*pi*ff*tt);surf(ff,tt,x)
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