A periodic function f(t) is defined on its period by the formula: -t², ƒ (0) ={7}) -2<t≤0; 0≤t≤2. c) Determine, whether the function is odd, even, or neither odd not even? d) Find the average value of the function on its period. [0.25 marks] e) Calculate the Fourier coefficients and present the function by the Fourier series using the symbol Σ. f) Present first three terms of the Fourier series in the explicit form. [3 marks] [2 mark]