From 7937f1b719d9d56d56eecd4dcdf3266fe0a645f7 Mon Sep 17 00:00:00 2001 From: wangweiye7840 Date: Wed, 26 Jul 2023 15:01:47 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E8=87=AA=E6=8B=9F=E9=A2=98?= =?UTF-8?q?=E7=9B=AE3=E9=A2=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- 题库0.3/Problems.json | 60 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index 573ce8dd..bf267f38 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -494257,6 +494257,66 @@ "space": "4em", "unrelated": [] }, + "019299": { + "id": "019299", + "content": "设 $a, b, c \\in (0,+\\infty)$, 求证: $\\sqrt{a^2+b^2}+\\sqrt{b^2+c^2}+\\sqrt{c^2+a^2}\\geq \\sqrt{2}(a+b+c)$.", + "objs": [], + "tags": [], + "genre": "解答题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20230726\t赵琍琍" + ], + "same": [], + "related": [], + "remark": "", + "space": "4em", + "unrelated": [] + }, + "019300": { + "id": "019300", + "content": "已知: $a, b, c \\in (0,+\\infty)$, 求证: $a^3+b^3+c^3 \\geq \\dfrac{1}{3}(a^2+b^2+c^2)(a+b+c)$.", + "objs": [], + "tags": [], + "genre": "解答题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20230726\t赵琍琍" + ], + "same": [], + "related": [], + "remark": "", + "space": "4em", + "unrelated": [] + }, + "019301": { + "id": "019301", + "content": "已知: $a, b, c \\in (0,+\\infty)$, 求证: $a^4+b^4+c^4 \\geq a b c(a+b+c)$.", + "objs": [], + "tags": [], + "genre": "解答题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20230726\t赵琍琍" + ], + "same": [], + "related": [], + "remark": "", + "space": "4em", + "unrelated": [] + }, "020001": { "id": "020001", "content": "判断下列各组对象能否组成集合, 若能组成集合, 指出是有限集还是无限集.\\\\\n(1) 上海市控江中学$2022$年入学的全体高一年级新生;\\\\\n(2) 中国现有各省的名称;\\\\\n(3) 太阳、$2$、上海市;\\\\\n(4) 大于$10$且小于$15$的有理数;\\\\\n(5) 末位是$3$的自然数;\\\\\n(6) 影响力比较大的中国数学家;\\\\\n(7) 方程$x^2+x-3=0$的所有实数解;\\\\ \n(8) 函数$y=\\dfrac 1x$图像上所有的点;\\\\ \n(9) 在平面直角坐标系中, 到定点$(0, 0)$的距离等于$1$的所有点;\\\\\n(10) 不等式$3x-10<0$的所有正整数解;\\\\\n(11) 所有的平面四边形.",