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Web skærmformat. - Aarhus Universitet

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IV. Differentialligninger – 2. 1. ordens ligninger 325<br />

✌ 1. ordens lineært system<br />

✌ Opgave<br />

2.2. Separabel ligning ☞ [S] 7.3 Separable equations<br />

Definition<br />

En 1. ordens differentialligning<br />

1<br />

kaldes separabel.<br />

Løsning<br />

Integration<br />

2<br />

Fastlægger løsninger optil en konstant.<br />

<br />

dy<br />

= g(x)f(y)<br />

dx<br />

dy<br />

f(y) =<br />

<br />

g(x)dx<br />

2.3. 1. ordens lineær ligning ☞ [LA] 14 Lineær differentialligning<br />

Definition 1<br />

Den lineœre 1. ordens differentialligning er<br />

dy<br />

= a(x)y + b(x)<br />

dx

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