r= d/(1-r)

Lösung

r = \frac{d}{1 - r}

(h, k) = (\frac{1}{2}, \frac{1}{4}), p = - \frac{1}{4}

Schritte zur Lösung

r = \frac{d}{1 - r}

Rewrite

r - \frac{d}{1 - r} = 0

in the standard form

4 (- \frac{1}{4}) (d - \frac{1}{4}) = (r - \frac{1}{2})^{2}

Therefore parabola properties are:

(h, k) = (\frac{1}{2}, \frac{1}{4}), p = - \frac{1}{4}

(y + 2)^{2} = - 16 (x + 5)

y < - x^{2} + 4

so l v e f or x, 5 x^{2} = 14 w + 3

x = y + 4 y^{2}

x = - w (x, y) y