Réponses

2012-12-08T17:14:58+01:00

f'(x)=2x(X2-1)+(2X-1)x2X=2x X2-2+4xX2-2X=6xX2-2X-2=2x(3xX2-X-1)

nombre derivee=2x(3x4-2-3)=14

 

equation tangente 14x(X-2)+9=14X-28+9=14X-19