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Funktioner

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Oversigt funktioner og koordinatsystemer<br />

Eksponential-funktionen<br />

En eksponentialfunktion er en funktion af typen y = b · a x<br />

y = 5 x<br />

y = 5 · 4 x<br />

y = 6 · 1,03 x<br />

y = 10 · 0,04 x<br />

Eksempel 1<br />

Forskrift: y = 3 · 2 x<br />

Grafisk billede: en eksponentielt stigende kurve<br />

(stigende fordi a > 1)<br />

Eksempel 2<br />

Forskrift: y = 3 ·0,5 x<br />

Grafisk billede: en eksponentielt faldende kurve<br />

(faldende fordi a < 1)<br />

Hans Pihl, KVUC Side 11

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