¨Precalculus - Vergelijkingen van Kegelsneden - HF4

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Cirkel

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4 Terms

1

Cirkel

(x-x0)² + (y-y0)² = r²

  • Middelpunt (x0,y0)

  • Straal = r

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2

Ellips

(x-x0)²/a² + (y-y0)²/b² = 1

  • Middelpunt (x0,y0)

  • Toppen grote as = a

  • Toppen kleine as = b

Bij een ellips zijn de toppen inbegrepen, indien niet, heb je een cirkel

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3

Parabool

f(x) = a(x-h)² + k of (x-x0)² = 4p(y-y0)

  • h = richtlijn

  • k = verticale verschuiving

  • a = richtingscoëfficiënt

  • p = vaste afstand tussen je richtlijn en je brandpunt

  • (x0,y0) = top

Let op bij een parabool is enkel één variabele gekwadrateerd

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4

Hyperbool

(x-x0)²/a² - (y-y0)²/b² = 1

Een hyperbool “)(“ is gewoon het tegengestelde van een ellips “()” 😄

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