Any reasonable periodic function can be written as a sum of sines and cosines — its Fourier series.
Fourier series power signal processing, audio compression (MP3), JPEG image compression, and much of modern engineering.
Any reasonable periodic function can be written as a sum of sines and cosines — its Fourier series.
Fourier series power signal processing, audio compression (MP3), JPEG image compression, and much of modern engineering.