参加测验: 高考数学：圆锥曲线基础 | Zestly

Question 1

已知椭圆的方程为 $\frac{x^2}{25} + \frac{y^2}{9} = 1$，则该椭圆的焦点坐标为？

Accepted Answer

$(\pm 4, 0)$

Answer

$(\pm 3, 0)$

Answer

$(0, \pm 3)$

Answer

$(0, \pm 4)$

Question 2

双曲线 $x^2/16-y^2/9=1$ 的离心率是多少？

Accepted Answer

$5/4$

Answer

$4/5$

Answer

$3/4$

Answer

$5/3$

Question 3

抛物线 $y^2 = 8x$ 的准线方程是？

Accepted Answer

$x = -2$

Answer

$x = 4$

Answer

$x = -4$

Answer

$y = -2$

Question 4

若椭圆 $\frac{x^2}{m} + \frac{y^2}{4} = 1$ 的离心率为 $\frac{\sqrt{3}}{2}$，则 $m$ 的值为？

Answer

16

Answer

1

Answer

12

Answer

4

Question 5

下列方程中，表示双曲线的是？

Answer

$x^2 + y^2 = 1$

Answer

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

Answer

$x^2 + 2y^2 = 1$

Answer

$y^2 - \frac{x^2}{9} = 1$