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Cheeze
@Cheeze
May 2019
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Bonjour, j'ai un dm de math niveau TerS a rendre et je suis bloquer a la toute dernière question du dm, merci de m'aider. La question est de résoudre en C l'equation 5z+3/z=2
Merci de votre aide.
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laurance
5z + 3/z = 2 d'où z(5z+3/z)= 2z 5z² +3 = 2z 5z² -2z + 3=0 delta= 4 - 4(15)= 4( 1-15)= 4(-14) = 4(14i²)
z =( 2 + 2irac(14) ) / 10 ou z =z =( 2 - 2irac(14) ) / 10
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Cheeze
merci beaucoup
rosiemuller2000
Coucou
5z+3/z=2
3/z = 2 -5z
3 = 2z -5z²
5z² -2z + 3 = 0
Δ = (-2)²-4*5*3 = -56
delta est negatif donc il n y a pas de solution possible
voila j espere t avoir aider
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Cheeze
merci beaucoup sa me débloque beaucoup mine de rien, je vais calculer delta négatif avec les complexes comme demander :)
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z =( 2 + 2irac(14) ) / 10 ou z =z =( 2 - 2irac(14) ) / 10
5z+3/z=2
3/z = 2 -5z
3 = 2z -5z²
5z² -2z + 3 = 0
Δ = (-2)²-4*5*3 = -56
delta est negatif donc il n y a pas de solution possible
voila j espere t avoir aider