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      • The Simplex Algorithm
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      • The online Simplex method
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      • Runge-Kutta On line
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      • The Complex plane
      • Complex variable functions
      • The complex derivate
      • Complex integration
      • Cauchy's integral formula
    • Special Relativity
      • Maxwell's Equations
      • Lorentz
      • Minkowski
      • E=mc2
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      • The Online Fourier Series
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      • Jordan 3x3(2)
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      • The Euler's method
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Fourier Coefficients
Lets

f∈L1[-1/2, 1/2]

It is call the nth-Fourier Coefficient to

fn = <f, e2πinx> = ∫1/2-1/2f(x) e-2πinx dx
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