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let-give-f-x-1-2-cosx-fonction-2pi-periodic-even-developp-f-at-fourier-series-




Question Number 28067 by abdo imad last updated on 19/Jan/18
let give f(x)= (1/(2+cosx))   fonction 2π periodic even.  developp f  at fourier series.
$${let}\:{give}\:{f}\left({x}\right)=\:\frac{\mathrm{1}}{\mathrm{2}+{cosx}}\:\:\:{fonction}\:\mathrm{2}\pi\:{periodic}\:{even}. \\ $$$${developp}\:{f}\:\:{at}\:{fourier}\:{series}. \\ $$

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