Math: $\displaystyle\sum_{n = 1}^\infty \left[a_n\cos\left(\dfrac{n\pi x}{L}\right)+b_n\sin\left(\dfrac{n\pi x}{L}\right)\right]$
Evaluate:
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hmmm....Study Fourier Series
hmmm....Study Fourier Series first....hehehehehe
Fourier series equation yan. Yung mga complex (sawtooth waves, triangular waves at iba pa) at mga panget na mga wave shapes ay kayang ma-decompose into sine and cosine waves.