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5 Cards in this Set

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Comment démontrer que N est 1 norme ?
N(f)=0
N(f+g)=< N(f)+N(g)
N(k.f)=k.N(f)
|ab|=< ?
(a²+b²)/2
Primitive de ln(x)
x.(ln(x)-1)+ cte
Comment démontrer que <,> est un produit scalaire ?
<f,g>=<g,f>
<f,g+k.g'>=<f,g>+k.<f,g'>
<f,f>=0 --> F=0
<f,f> >=0
Equa diff 2e d°:
Y"+aY'+bY=fct
2racines réelles
-> y=Ae(r1.x)+Be(r2.x)
1racine double
-> y=(A+Bx)e(r0.x)
2racines cplx : a+/- ib
-> y=Ae(ax)cos(bx)+Be(ax)sin(bx)