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Corrigé de l'Examen

2. B = cos(3 + 5i). 1. A = i e?i = i(cos(?1) + i sin(?1)) = i(cos 1 ? i sin 1) = sin 1 + i
cos 1. 2. B = cos(3 + 5i) = cos 3 cos(5i) ? sin 3 sin(5i) = cos 3 ch 5 ? i sin 3 sh 5.

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