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5 Cards in this Set
- Front
- Back
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Comment démontrer que N est 1 norme ?
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N(f)=0
N(f+g)=< N(f)+N(g) N(k.f)=k.N(f) |
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|ab|=< ?
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(a²+b²)/2
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Primitive de ln(x)
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x.(ln(x)-1)+ cte
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Comment démontrer que <,> est un produit scalaire ?
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<f,g>=<g,f>
<f,g+k.g'>=<f,g>+k.<f,g'> <f,f>=0 --> F=0 <f,f> >=0 |
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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) |
