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Web skærmformat. - Aarhus Universitet

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VI. Egenvektorer og diagonalisering – 2. Diagonalisering 472<br />

cos(θ) =<br />

a · b<br />

a b =<br />

a1b1 + a2b2<br />

<br />

a2 1 + a2 <br />

2 b2 1 + b2 2<br />

2.34. Vinkel ☞ [S] 9.3 The dot product<br />

y<br />

b=( 2,2)<br />

a=(1,3)<br />

Vinkel mellem vektorer<br />

2.35. Prikprodukt ☞ [S] 9.3 The dot product<br />

Eksempel<br />

x

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