Find the fourier series of the function  defined by

To find the Fourier series of the function \( f(x) \), we'll need to calculate the coefficients \( a_n \) and \( b_n \) for the Fourier series representation:

\[ f(x) = \frac{a_0}{2} + \sum_{n=1}^{\infty} \left( a_n \cos(nx) + b_n \sin(nx) \right) \]

The coefficients \( a_n \) and \( b_n \) can be calculated using the formulas:

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