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修改2848题面

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wangweiye7840 2024-01-24 14:26:36 +08:00
parent 5a66126cda
commit 15698e3bcd
1 changed files with 3 additions and 2 deletions
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5
题库0.3/Problems.json
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@ -90197,7 +90197,7 @@
},
"002848": {
"id": "002848",
"content": "设奇函数$y=f(x)$的定义域为$[-5, 5]$.若当$x\\in [0,5]$时, $y=f(x)$的图像如图, 则不等式$xf(x)<0$的解是\\blank{50}.\n\\begin{center}\n \\begin{tikzpicture}[>=stealth]\n \\draw [->] (-1,0) -- (6,0) node [below] {$x$};\n \\draw [->] (0,-2.5) -- (0,2.5) node [left] {$y$};\n \\draw (2,0) node [below] {$2$};\n \\draw (5,0) node [above] {$5$};\n \\draw [domain = 0:2,samples = 100] plot (\\x,-\\x*\\x+2*\\x);\n \\draw [domain = 2:5,samples = 100] plot (\\x, \\x*\\x/2-4*\\x+6);\n \\draw [dashed] (5,0) -- (5,-1.5);\n \\draw (0,0) node [below left] {$O$};\n \\end{tikzpicture}\n\\end{center}",
"content": "设奇函数$y=f(x)$的定义域为$[-5, 5]$.若当$x\\in [0,5]$时, $y=f(x)$的图像如图, 则不等式$xf(x)<0$的解是\\blank{50}.\n\\begin{center}\n\\begin{tikzpicture}[>=latex, yscale = 0.5]\n\\draw [->] (-1,0) -- (6,0) node [below] {$x$};\n\\draw [->] (0,-2.5) -- (0,2.5) node [left] {$y$};\n\\draw (2,0) node [below] {$2$};\n\\draw (5,0) node [above] {$5$};\n\\draw [domain = 0:2,samples = 100] plot (\\x,-\\x*\\x+2*\\x);\n\\draw [domain = 2:5,samples = 100] plot (\\x, \\x*\\x/2-4*\\x+6);\n\\draw [dashed] (5,0) -- (5,-1.5);\n\\draw (0,0) node [below left] {$O$};\n\\end{tikzpicture}\n\\end{center}",
"objs": [
"K0218001B"
],
@ -90211,7 +90211,8 @@
"usages": [],
"origin": "2022届高三第一轮复习讲义",
"edit": [
"20220701\t王伟叶"
"20220701\t王伟叶",
"20240124\t王伟叶"
],
"same": [],
"related": [],