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A4-format til udskrift. - Aarhus Universitet

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10 I. DIFFERENTIATION<br />

y<br />

0<br />

x 2 + y 2 = 9 k 2<br />

Niveaukurver for g(x,y) = 9 − x 2 − y 2<br />

1.12. Top og dal ☞ [S] 11.1 Functions of several variables<br />

Figur<br />

z<br />

x<br />

Grafen af f(x,y) =<br />

y<br />

x<br />

−y<br />

1 + x 2 + y 2<br />

1.13. Top og dal ☞ [S] 11.1 Functions of several variables<br />

Figur<br />

y<br />

Niveaukurver for f(x,y) =<br />

−y<br />

1 + x 2 + y 2<br />

x

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