4. You are given the following function E+33 7r 4. You are given the following function 2 2 Extend this function periodically for all c,

4. You are given the following function E+33 7r<:z: _ f extend this function periodically for all into a triangular wave in an even continuous manner. state what the fourier cosine series of is write out parseval identity nd mean square error and determine rate at which it decays to zero as n chapter your textbook study section on minimizing error.>

4. You are given the following function 2 2 Extend this function periodically for all c, into a triangular wave, in an even, continuous manner. State what the Fourier cosine series of this function is, write out Parseval's Identity for the Fourier series of f@), find the mean square error ON, and determine the rate at which it decays to zero as N + 00. (Hint: In Chapter 7 of your textbook, study the section on minimizing the square error.)