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Lanuldeesmath
@Lanuldeesmath
April 2019
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Quel son les dérivées de x² ? de k*x² ? de kx ?
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anylor
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Bonjour
dérivée de x² = 2 x
dérivé de k×x² = 2k ×x = 2kx
dérivé de kx = k
on utilise la formule du cours x^n = n × x^(n-1)
si tu as k×x^n ; la dérivée = k ×n × x^(n-1) = kn x^(n-1)
exemple
si k =5 => on a kx² = 5x²
dérivée de 5x² = 5 × 2 ×x ^(2-1) = 10x
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Bonjourdérivée de x² = 2 x
dérivé de k×x² = 2k ×x = 2kx
dérivé de kx = k
on utilise la formule du cours x^n = n × x^(n-1)
si tu as k×x^n ; la dérivée = k ×n × x^(n-1) = kn x^(n-1)
exemple
si k =5 => on a kx² = 5x²
dérivée de 5x² = 5 × 2 ×x ^(2-1) = 10x