收录高三寒假作业09新题

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weiye.wang 2024-01-24 20:48:47 +08:00
parent 6b7c58d816
commit d2f375d819
2 changed files with 188 additions and 5 deletions

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20240124-203157
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20240124-204739
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"20220726\t王伟叶"
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"20230128\t王伟叶"
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"20230128\t王伟叶"
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@ -506404,7 +506410,9 @@
"20230707\t王伟叶"
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@ -569954,7 +569962,9 @@
"20230101\t王伟叶"
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@ -640155,6 +640165,176 @@
"space": "4em",
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"023695": {
"id": "023695",
"content": "若中心在原点, 两焦点坐标分别为 $(-2,0)$、$(2,0)$ 的椭圆过点 $(\\dfrac{5}{2},-\\dfrac{3}{2})$, 则该椭圆的标准方程为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
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"same": [],
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"023696": {
"id": "023696",
"content": "若椭圆的长轴长为 $12$, 一个焦点是 $(0,2)$, 则该椭圆的标准方程为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
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"same": [],
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"023697": {
"id": "023697",
"content": "椭圆 $\\dfrac{x^2}{25}+\\dfrac{y^2}{9}=1$ 上的点 $M$ 到焦点 $F_1$ 的距离为 $2$, 若 $N$ 是 $MF_1$ 的中点, 则 $|ON|=$\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
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"same": [],
"related": [
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"remark": "",
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"023698": {
"id": "023698",
"content": "若椭圆 $\\dfrac{y^2}{9}+\\dfrac{x^2}{4}=1$ 焦点为 $F_1$、$F_2$, 点 $P$ 在椭圆上, 则 $\\Delta F_1PF_2$ 的面积的最大值为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
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"same": [],
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"remark": "",
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"023699": {
"id": "023699",
"content": "若方程 $\\dfrac{x^2}{a+2}-\\dfrac{y^2}{a-1}=1$ 表示的曲线为椭圆, 则实数 $a$ 的取值范围是\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
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"remark": "",
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"023700": {
"id": "023700",
"content": "已知 $A$、$B$ 是椭圆 $E: \\dfrac{x^2}{a^2}+\\dfrac{y^2}{b^2}=1$($a>b>0$) 上的两点, 且 $A$、$B$ 关于坐标原点对称, $F$是椭圆的一个焦点, 若 $\\triangle ABF$ 面积的最大值恰为 $2$, 则椭圆 $E$ 的长轴长的最小值为\\blank{50}.",
"objs": [],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
],
"same": [],
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"remark": "",
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"023701": {
"id": "023701",
"content": "椭圆 $\\dfrac{x^2}{9}+\\dfrac{y^2}{4}=1$ 与椭圆 $\\dfrac{x^2}{9-m}+\\dfrac{y^2}{4-m}=1$($m<4$) 的 \\bracket{20}.\n\\twoch{长轴长相等}{焦距相等}{短轴长相等}{长轴长、短轴长、焦距都不相等}",
"objs": [],
"tags": [],
"genre": "选择题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
],
"same": [],
"related": [
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"remark": "",
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"023702": {
"id": "023702",
"content": "已知椭圆 $C$ 的焦点为 $F_1(-1,0)$、$F_2(1,0)$, 过 $F_2$ 的直线与椭圆 $C$ 交于 $A$、$B$ 两点. 若 $|AF_2|=2|F_2B|$, $|AB|=|BF_1|$, 则椭圆 $C$ 的标准方程为\\bracket{20}.\n\\fourch{$\\dfrac{x^2}{2}+y^2=1$}{$\\dfrac{x^2}{3}+\\dfrac{y^2}{2}=1$}{$\\dfrac{x^2}{4}+\\dfrac{y^2}{3}=1$ }{$\\dfrac{x^2}{5}+\\dfrac{y^2}{4}=1$}",
"objs": [],
"tags": [],
"genre": "选择题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20240124\t毛培菁"
],
"same": [],
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"030001": {
"id": "030001",
"content": "若$x,y,z$都是实数, 则:(填写``\\textcircled{1} 充分非必要、\\textcircled{2} 必要非充分、\\textcircled{3} 充要、\\textcircled{4} 既非充分又非必要''之一)\\\\\n(1) ``$xy=0$''是``$x=0$''的\\blank{50}条件;\\\\\n(2) ``$x\\cdot y=y\\cdot z$''是``$x=z$''的\\blank{50}条件;\\\\\n(3) ``$\\dfrac xy=\\dfrac yz$''是``$xz=y^2$''的\\blank{50}条件;\\\\\n(4) ``$|x |>| y|$''是``$x>y>0$''的\\blank{50}条件;\\\\\n(5) ``$x^2>4$''是``$x>2$'' 的\\blank{50}条件;\\\\\n(6) ``$x=-3$''是``$x^2+x-6=0$'' 的\\blank{50}条件;\\\\\n(7) ``$|x+y|<2$''是``$|x|<1$且$|y|<1$'' 的\\blank{50}条件;\\\\\n(8) ``$|x|<3$''是``$x^2<9$'' 的\\blank{50}条件;\\\\\n(9) ``$x^2+y^2>0$''是``$x\\ne 0$'' 的\\blank{50}条件;\\\\\n(10) ``$\\dfrac{x^2+x+1}{3x+2}<0$''是``$3x+2<0$'' 的\\blank{50}条件;\\\\\n(11) ``$0<x<3$''是``$|x-1|<2$'' 的\\blank{50}条件.",