, From which to apply Fourier spectral method that makes it easier, because we do not need to create a loop to 3 equation writing formats and also simpler. Viewed from the comparison. As follows:
From applying the Fourier spectral method that makes it easier because we do not have to create a loop to 3 rounds and model equations are easier too. See the comparison below
The applications show that Fourier spectral method is simpler, because we don't have to create loop to 3 around and style of writing the equations are easier. As can be seen from the comparison of the following .