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Beliebt Geometry >

leitkurve x^2+2x-8

Lösung

leitkurve

x^{2} + 2 x - 8

Lösung

y = - \frac{37}{4}

Schritte zur Lösung

Rewrite

y = x^{2} + 2 x - 8

in the standard form

4 \cdot \frac{1}{4} (y - (- 9)) = (x - (- 1))^{2}

(h, k) = (- 1, - 9), p = \frac{1}{4}

Parabola is symmetric around the y-axis and so the directrix is a line parallel to the x-axis, a distance

- p

from the center

(- 1, - 9)

y-coordinate

y = - 9 - p

y = - 9 - \frac{1}{4}

Fasse zusammen

y = - \frac{37}{4}

Graph

Beliebte Beispiele

leitkurve x^2+2x-1

d i rec t r i x x^{2} + 2 x - 1

leitkurve y^2-16x=0

d i rec t r i x y^{2} - 16 x = 0

leitkurve 2x^2-8x+9

d i rec t r i x 2 x^{2} - 8 x + 9

leitkurve y=(x^2-4x-1)/7

d i rec t r i x y = \frac{x ^{2} - 4 x - 1}{7}

leitkurve y^2-28x=0

d i rec t r i x y^{2} - 28 x = 0