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Web skærmformat. - Aarhus Universitet

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IX. Opgaver – 1. August 2002 539<br />

y<br />

∇f(0,2)<br />

(0,2)<br />

u<br />

1<br />

x<br />

2. I retning u = (3/5,4/5) er den retningsafledede<br />

Duf(0,2) = ∇f(0,2) · u<br />

= (0,13/3) · (3/5,4/5)<br />

= 52/15<br />

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

Opgave 5 - ekstra

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