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Kædelinjen - Home page of Henrik Kragh Sørensen

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<strong>Kædelinjen</strong> 19<br />

over B. S˚a gælder (se figur 7).<br />

FAB<br />

FCB<br />

P<br />

FCB<br />

P<br />

FAB<br />

= sin ∠CBG<br />

sin ∠ABG<br />

= sin ∠ABC<br />

sin ∠ABG<br />

= sin ∠ABC<br />

sin ∠CBG<br />

Figur 5: JOHANN BERNOULLI’s hypotese 2. (Kowalewski 1914, 153)<br />

Figur 6: JOHANN BERNOULLI’s hypotese 3. (Kowalewski 1914, 153)<br />

Figur 7: JOHANN BERNOULLI’s hypotese 5. (Kowalewski 1914, 153)<br />

P˚a grundlag af disse antagelser opstiller JOHANN BERNOULLI en differentialligning<br />

for kædelinjen. Ud over de nævnte antagelser f˚ar han i løbet af udledningen<br />

af differentialligningen brug for at antage, at kæden er homogen, men dette

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