en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

foci+x^2-2x-1

Solution

foci

+ x^{2} - 2 x - 1

Solution

(1, - \frac{7}{4})

Solution steps

Rewrite

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

in the standard form

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

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

Parabola is symmetric around the y-axis and so the focus lies a distance

p

from the center

(1, - 2)

along the y-axis

(1, - 2 + p)

= (1, - 2 + \frac{1}{4})

Refine

(1, - \frac{7}{4})

Popular Examples

foci 5x^2-15x foci

5 x^{2} - 15 x

foci x^2+6y=0 foci

x^{2} + 6 y = 0

foci (x+5)^2=-4(y+1)foci

(x + 5)^{2} = - 4 (y + 1)

foci 9-3x^2 foci

9 - 3 x^{2}

foci y^2+8x-4y+20=0 foci

y^{2} + 8 x - 4 y + 20 = 0

Frequently Asked Questions (FAQ)

What is the foci+x^2-2x-1 ?
The foci+x^2-2x-1 is (1,-7/4)