Citation:
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Envoyé par florian
Tu obtient donc sum (2*Pi*b) - sum (2*Pi*c*i) = 2*Pi*b*(b-a)/c-2*Pi*c*(b-a)/c*((b-a)/c+1)/2
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Je crois que tu as un erreur sur le premier terme.
J'obtiens 2Pi*a(b-a)/c+2Pi(b-a)(b-a+c)/(2c)
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