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Beliebt Geometry >

leitkurve y=x^2+4x-1

Lösung

leitkurve

y = x^{2} + 4 x - 1

Lösung

y = - \frac{21}{4}

Schritte zur Lösung

Rewrite

y = x^{2} + 4 x - 1

in the standard form

4 \cdot \frac{1}{4} (y - (- 5)) = (x - (- 2))^{2}

(h, k) = (- 2, - 5), 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

(- 2, - 5)

y-coordinate

y = - 5 - p

y = - 5 - \frac{1}{4}

Fasse zusammen

y = - \frac{21}{4}

Graph

Beliebte Beispiele

leitkurve y^2-10y-12x+37=0

d i rec t r i x y^{2} - 10 y - 12 x + 37 = 0

leitkurve y=x^2-10x-31

d i rec t r i x y = x^{2} - 10 x - 31

leitkurve x^2-2x-9

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

leitkurve y=x^2-8

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

leitkurve-0.4x^2-5

d i rec t r i x - 0.4 x^{2} - 5