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Web skærmformat. - Aarhus Universitet

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IX. Opgaver – 1. August 2002 538<br />

2. Angiv den retningsafledede af f i punktet P = (0,2) i retning givet ved enhedsvektoren<br />

(3/5,4/5).<br />

Løsning<br />

1. Gradienten beregnes<br />

fx = 3x 2 /(x 3 + y + 1)<br />

fy = 2y + 1/(x 3 + y + 1)<br />

∇f(0,2) = (fx(0,2),fy(0,2)) = (0,13/3)<br />

1.26. Find gradient ☞ Matematik Alfa 1, August 2002<br />

Opgave 5 - løsning

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