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Fourier series | Lecture 1 | Heat equation & Relation with Fourier series | Derivation | Solution
Fourier series | Lecture 2 | Orthogonality | Gibbs phenomenon | Odd square wave | Ramp wave
Fourier series | Lecture 3 | Two alternate forms | 3 solved examples | Sawtooth wave
Fourier series | Lecture 4 | Complex forms | 2 solved examples