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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 (x-5)^2=4(y-3)foci

(x - 5)^{2} = 4 (y - 3)

foci y^2-10y+4x+21=0 foci

y^{2} - 10 y + 4 x + 21 = 0

foci 0.3x^2-66x+23114 foci

0.3 x^{2} - 66 x + 23114

foci x/(25)-y^2=1 foci

\frac{x}{25} - y^{2} = 1

foci y=2x^2-2 foci

y = 2 x^{2} - 2

Frequently Asked Questions (FAQ)

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