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Web skærmformat. - Aarhus Universitet

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V. Matricer – 3. Lineære ligninger 404<br />

2x1 − 2x2 − 4x3 − 6x4 = −16<br />

x2 + 2x3 + 6x4 = 4<br />

−2x1 + 5x2 + 12x3 + 21x4 = 34<br />

3.4. Eliminer en ubekendt ☞ [LA] 6 Løsningsteknik<br />

Eksempel - fortsat<br />

2x1 − 2x2 − 4x3 − 6x4 = −16<br />

x2 + 2x3 + 6x4 = 4<br />

−2x1 + 5x2 + 12x3 + 21x4 = 34<br />

2x1 − 2x2 − 4x3 − 6x4 = −16<br />

x2 + 2x3 + 6x4 = 4<br />

3x2 + 8x3 + 15x4 = 18<br />

3.5. Eliminer endnu en ☞ [LA] 6 Løsningsteknik<br />

Eksempel - fortsat<br />

2x1 − 2x2 − 4x3 − 6x4 = −16<br />

x2 + 2x3 + 6x4 = 4<br />

3x2 + 8x3 + 15x4 = 18

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