diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json index f93cc76d..0d6f9df4 100644 --- a/题库0.3/Problems.json +++ b/题库0.3/Problems.json @@ -510104,6 +510104,66 @@ "space": "4em", "unrelated": [] }, + "019831": { + "id": "019831", + "content": "已知$\\alpha,\\beta$是方程$2x^2-\\sqrt{15}x+1=0$的两根, 则$|\\alpha-\\beta|$的值为\\blank{50}.", + "objs": [], + "tags": [], + "genre": "填空题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20230918\t赵琍琍" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "019832": { + "id": "019832", + "content": "已知$x,y$是正实数, 则下列条件中, ``$x\\le y$''的必要条件为\\bracket{20}.\n\\fourch{$x+\\dfrac{2}{y}\\le y+\\dfrac{1}{x}$}{$x+\\dfrac{1}{2y}\\le y+\\dfrac{1}{x}$}{$x-\\dfrac{2}{y}\\le y-\\dfrac{1}{x}$}{$x-\\dfrac{1}{2y}\\le y-\\dfrac{1}{x}$}", + "objs": [], + "tags": [], + "genre": "选择题", + "ans": "", + "solution": "", + "duration": -1, + "usages": [], + "origin": "自拟题目", + "edit": [ + "20230918\t赵琍琍" + ], + "same": [], + "related": [], + "remark": "", + "space": "", + "unrelated": [] + }, + "019833": { + "id": "019833", + "content": "已知三角形的三边长分别为$a,b,c$. 设$M=\\dfrac{a}{1+a}+\\dfrac{b}{1+b}$, $N=\\dfrac{c}{1+c}$, $Q=\\dfrac{a+b}{1+a+b}$, 则$M,N,Q$的大小关系为\\bracket{20}.\n\\fourch{$M