Consider the sawtooth wave given by f(x)=x, T x T. 1. Find the Fourier coefficients for this function. 2. Plot the Fourier series for n = 4, 6, 10 terms in the interval - x T. You can do this using Mathematica, where the n'th order Fourier approx- imation to expr in x is given by the Fourier Series [expr,x,n] call. 3. Do you get better approximation of this function when n is increased ? What happens in the vicinity of x = ?