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Beliebt Geometry >

leitkurve y=x^2+9x+4

Lösung

leitkurve

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

Lösung

y = - \frac{33}{2}

Schritte zur Lösung

Rewrite

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

in the standard form

4 \cdot \frac{1}{4} (y - (- \frac{65}{4})) = (x - (- \frac{9}{2}))^{2}

(h, k) = (- \frac{9}{2}, - \frac{65}{4}), 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

(- \frac{9}{2}, - \frac{65}{4})

y-coordinate

y = - \frac{65}{4} - p

y = - \frac{65}{4} - \frac{1}{4}

Fasse zusammen

y = - \frac{33}{2}

Graph

Beliebte Beispiele

leitkurve 3x^2+4

d i rec t r i x 3 x^{2} + 4

leitkurve 3x^2+2

d i rec t r i x 3 x^{2} + 2

leitkurve 5x^2+7y=3

d i rec t r i x 5 x^{2} + 7 y = 3

leitkurve x=4y^2+12y+9

d i rec t r i x x = 4 y^{2} + 12 y + 9

leitkurve 7x^2-5x+9

d i rec t r i x 7 x^{2} - 5 x + 9