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| -rw-r--r-- | Fourier Series.page | 2 |
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diff --git a/Fourier Series.page b/Fourier Series.page index c96d55e..1c00a5b 100644 --- a/Fourier Series.page +++ b/Fourier Series.page @@ -72,7 +72,7 @@ As a final test to see if the Fourier series really could exist for any periodic If it is possible to approximate the above function using a sum of sines and cosines, then it can be argued that *any* continuous periodic function can be expressed in a similar way. This is because any function could be expressed as a number of peaks at every position. - +It turns out that the above function can be approximated as the sum of two cosines, namely, $\cos^{2n}(x) + cos^{2n+1}(x)$ ##What is the Fourier series actually?</b> ##Why is Fourier series useful? </b> |