10. [4 Points] Using Fourier series, show that the sawtooth function with 2 = 2x, f (@) = (0

10. [4 Points] Using Fourier series, show that the sawtooth function with 2n (T < 27r) 211, can be written as: f (x) = 2 sin:r 1 1 sin 2m -f- sin 3m + . '2 sin nx