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Beliebt Geometry >

leitkurve x^2+8x+7

Lösung

leitkurve

x^{2} + 8 x + 7

Lösung

y = - \frac{37}{4}

Schritte zur Lösung

Rewrite

y = x^{2} + 8 x + 7

in the standard form

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

(h, k) = (- 4, - 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

(- 4, - 9)

y-coordinate

y = - 9 - p

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

Fasse zusammen

y = - \frac{37}{4}

Graph

Beliebte Beispiele

leitkurve 2x^2+5

d i rec t r i x 2 x^{2} + 5

leitkurve 2y^2-44x=0

d i rec t r i x 2 y^{2} - 44 x = 0

leitkurve x=-3/8 (y-2)^2-1

d i rec t r i x x = - \frac{3}{8} (y - 2)^{2} - 1

leitkurve y=-2+x^2

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

leitkurve y^2+4x+1=0

d i rec t r i x y^{2} + 4 x + 1 = 0