题目内容
椭圆
+
=1的右焦点到直线y=
x的距离是______.
| x2 |
| 4 |
| y2 |
| 3 |
| ||
| 3 |
∵椭圆
+
=1的右焦点为(1,0)
∴右焦点到直线
x-3y=0的距离为d=
=
故答案为
| x2 |
| 4 |
| y2 |
| 3 |
∴右焦点到直线
| 3 |
| ||
|
| 1 |
| 2 |
故答案为
| 1 |
| 2 |
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| x2 |
| 4 |
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| 1 |
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| 1 |
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