fft - What do the X and Y axis stand for in the Fourier Transformation in wolfram mathematica? -


in wolfram mathematica function fourier has following declaration 

fourier[list]

and after list given function, simple listlineplot gives following result: graphic

my question is: x , y axis represent in result?

the frequency spectrum 0 fs, fs sampling frequency.so in response question y-axis amplitude (because took abs value of complex output) , x-axis frequency values 0 fs.


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