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Beliebt Geometry >

leitkurve y=(-x-1)(x+3)

Lösung

leitkurve

y = (- x - 1) (x + 3)

Lösung

y = \frac{5}{4}

Schritte zur Lösung

Rewrite

y = (- x - 1) (x + 3)

in the standard form

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

(h, k) = (- 2, 1), 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, 1)

y-coordinate

y = 1 - p

y = 1 - (- \frac{1}{4})

Fasse zusammen

y = \frac{5}{4}

Graph

Beliebte Beispiele

leitkurve 2(y-1)^2-4

d i rec t r i x 2 (y - 1)^{2} - 4

leitkurve y=48x-8x^2

d i rec t r i x y = 48 x - 8 x^{2}

leitkurve x^2+4x+4y=-4

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

leitkurve y=-2x^2

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

leitkurve y=2x^2-3

d i rec t r i x y = 2 x^{2} - 3