omega = 2*pi in matlab

You can define the variable omega to 2*pi in MATLAB as follows:

main.m
omega = 2 * pi;
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Alternatively, you can use the built-in constant 2*pi instead of defining a new variable:

main.m
omega = 2 * pi;
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Both methods will give you the same result: the value of omega will be set to 6.283185307179586.