A periodic function f(t) of period 2π is defined within the period 0≤ t ≤2π by
![640_8232c7f4-d8e4-4d8b-a5d7-3eda9d4d5643.png](https://secure.tutorsglobe.com/CMSImages/640_8232c7f4-d8e4-4d8b-a5d7-3eda9d4d5643.png)
Draw a graph of the function for -4π≤ t≤ 4π and obtain its Fourier series expansion.
By replacing t by t -π in your answer, show that the periodic function f(t - π) - is represented by a sine series of odd harmonics.
7.2.8 Exercises