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Beliebt Geometry >

leitkurve 2x^2-4x-9

Lösung

leitkurve

2 x^{2} - 4 x - 9

Lösung

y = - \frac{89}{8}

Schritte zur Lösung

Rewrite

y = 2 x^{2} - 4 x - 9

in the standard form

4 \cdot \frac{1}{8} (y - (- 11)) = (x - 1)^{2}

(h, k) = (1, - 11), p = \frac{1}{8}

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, - 11)

y-coordinate

y = - 11 - p

y = - 11 - \frac{1}{8}

Fasse zusammen

y = - \frac{89}{8}

Graph

Beliebte Beispiele

leitkurve x^2=4y+8

d i rec t r i x x^{2} = 4 y + 8

leitkurve (9x^2)/2

d i rec t r i x \frac{9 x ^{2}}{2}

leitkurve 2x^2+8x+13

d i rec t r i x 2 x^{2} + 8 x + 13

leitkurve 2x^2-4x+9

d i rec t r i x 2 x^{2} - 4 x + 9

leitkurve 3x^2-31x+56-(x-8)

d i rec t r i x 3 x^{2} - 31 x + 56 - (x - 8)