Find a Fourier series to represent 𝑓(𝑥) = 𝑥2 𝑖𝑛 − 𝜋 ≤ 𝑥 ≤ 𝜋

Find a Fourier series to represent 𝑓(𝑥) = 𝑥2 𝑖𝑛 − 𝜋 ≤ 𝑥 ≤ 𝜋

Answer:-

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