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A4-format til udskrift. - Aarhus Universitet

A4-format til udskrift. - Aarhus Universitet

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240 IX. OPGAVER<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<br />

y<br />

1<br />

x 3 +y+1>0<br />

x<br />

Definitionsområdet.<br />

x<br />

z<br />

Grafen<br />

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

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

Opgave 5 - figur<br />

y<br />

1<br />

0 1<br />

Tangenter <strong>til</strong> niveaukurver for z = y 2 + ln(x 3 + y + 1).<br />

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

x<br />

y

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