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Web skærmformat. - Aarhus Universitet

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III. Potensrækker – 1. l’Hospitals regel og uegentlige integraler 250<br />

✌ Sammenligning<br />

1.2. Ubestemt udtryk ☞ [S] 4.5 Indeterminate forms and l’Hospital’s rule<br />

Eksempler<br />

Ubestemte udtryk<br />

ln(x)<br />

1 lim<br />

x→1 x − 1<br />

ln(x)<br />

2 lim<br />

x→∞ x − 1<br />

1.3. Ubestemt 0-0 udtryk ☞ [S] 4.5 Indeterminate forms and l’Hospital’s . . .<br />

Definition<br />

Lad f(x) → 0,g(x) → 0 når x → a. Udtrykket<br />

kaldes ubestemt af form 0<br />

0 .<br />

Eksempel<br />

f(x)<br />

lim<br />

x→a g(x)<br />

lim<br />

x→1<br />

x 2 − 1<br />

x − 1

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