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Vektorer og koordinatgeometri for gymnasiet

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44.1 Évelse se 44e.<br />

: x y<br />

z<br />

1 0 er tangentplan til en kugle K med centrum O ( 0,<br />

0,<br />

0)<br />

.<br />

Find en ligning <strong>for</strong> K .<br />

44.2 Évelse se 44d.<br />

Punktet A( 1,<br />

1,<br />

1)<br />

ligger pÇ en kugle K med centrum B ( 1,<br />

0,<br />

0)<br />

.<br />

Find en ligning <strong>for</strong> den plan som er tangentplan til K i A .<br />

48.1 Évelse se 11a <strong>og</strong> 14b.<br />

x<br />

a <br />

y<br />

1<br />

, b <br />

2<br />

<br />

(a)<br />

<br />

a<br />

b <br />

<br />

(b) a c <br />

<br />

(c) b c <br />

<br />

(d)<br />

<br />

( a<br />

b)<br />

c <br />

(e)<br />

<br />

ac<br />

bc<br />

<br />

3<br />

<strong>og</strong> c <br />

4<br />

<br />

.<br />

49.1 Évelse se 10b, 14b <strong>og</strong> 7b.<br />

x<br />

a <br />

y<br />

<br />

.<br />

(a) a<br />

<br />

<br />

<br />

<br />

3<br />

(b)<br />

<br />

( 3a)<br />

a <br />

(c) a <br />

<br />

2<br />

(d) a <br />

<br />

2<br />

(e) 3 a <br />

<br />

(f) Hvilke af de 5 udtryk (a)-(e) er lig hinanden?<br />

<strong>Vektorer</strong> <strong>og</strong> <strong>koordinatgeometri</strong> <strong>for</strong> <strong>gymnasiet</strong> 39 2012 Karsten Juul

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