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受欢迎的 Geometry >

-f(x)=x^2+x

解答

- f (x) = x^{2} + x

解答

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

求解步骤

- y = x^{2} + x

将

- y = x^{2} + x

改写为标准形式

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

因此抛物线性质是:

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

作图

流行的例子

(- x^{2}) - y = 0

x = 2 z^{2}

x-8y+x(x+3)=-6y+50

x - 8 y + x (x + 3) = - 6 y + 50

(x-0)^2=-4(82.615)(y-57.051)

(x - 0)^{2} = - 4 (82.615) (y - 57.051)

f (x) = (x - 4)^{2} + 6