In Exercises 2-16 find the Fourier series of f on [-L, L] and determine its sum for -L≤x≤L. Where indicated by C, graph f and 772 Fm(2) = 20 + Σ an COS L + bn sin x) n=1 on the same axes for various values of m. 1 0, -1 <x< 10. L=1; f(x) = COS TX,-<< 0, <<1