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Web skærmformat. - Aarhus Universitet

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I. Differentiation – 1. Kontinuitet 26<br />

Eksempel 4, 8<br />

er kontinuert på mængden R 2 .<br />

Løsning<br />

viser, at<br />

f(x,y) =<br />

|f(x,y)| = 3<br />

3x 2 y<br />

x 2 +y 2 , (x,y) = (0,0)<br />

0, (x,y) = 0<br />

x 2<br />

x2 |y| ≤ 3|y|<br />

+ y2 f(x,y) → 0, når (x,y) → (0,0)<br />

1.28. Øvelse grafisk ☞ [S] 11.2 Limits and continuity<br />

Figur

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