Bonjour ,
g(x) de la forme u/v :
u=x² donc u'=2x
v=1-2x donc v'=-2
g '(x)=[2x(1-2x)-(-2x²)]/ (1-2x)²=(2x-4x²+2x²) / (1-2x)²=(2x-2x²) / (1-2x)²
g'(x)=2x(1-x)/(1-2x)²
-----------------
y=f '(3)(y-3)+f(3)
y=-2(x-3)+7
y=-2x+13
--------------
h(x)=3(x²-10x+25)
h(x)=3x²-30x+75
h '(x)=6x-30=-30+6x
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Bonjour ,
g(x) de la forme u/v :
u=x² donc u'=2x
v=1-2x donc v'=-2
g '(x)=[2x(1-2x)-(-2x²)]/ (1-2x)²=(2x-4x²+2x²) / (1-2x)²=(2x-2x²) / (1-2x)²
g'(x)=2x(1-x)/(1-2x)²
-----------------
y=f '(3)(y-3)+f(3)
y=-2(x-3)+7
y=-2x+13
--------------
h(x)=3(x²-10x+25)
h(x)=3x²-30x+75
h '(x)=6x-30=-30+6x