修正14665题面
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@ -410263,7 +410263,7 @@
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"014665": {
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"id": "014665",
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"content": "已知$f(x)=\\begin{cases}|\\lg | x-1 \\|, & x \\neq 1, \\\\ 0, & x=1.\\end{cases}$关于$x$的方程$f^2(x)+b f(x)+c=0$有$7$个不同实数解的一个充要条件是\\bracket{20}.\n\\fourch{$b<0$且$c>0$}{$b>0$且$c<0$}{$b<0$且$c=0$}{$b \\geq 0$且$b<0$}",
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"content": "已知$f(x)=\\begin{cases}|\\lg | x-1 \\|, & x \\neq 1, \\\\ 0, & x=1.\\end{cases}$关于$x$的方程$f^2(x)+b f(x)+c=0$有$7$个不同实数解的一个充要条件是\\bracket{20}.\n\\fourch{$b<0$且$c>0$}{$b>0$且$c<0$}{$b<0$且$c=0$}{$b \\geq 0$且$c=0$}",
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"objs": [],
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"tags": [
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"第二单元"
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@ -410275,7 +410275,8 @@
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"usages": [],
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"origin": "2023年空中课堂高三复习课28",
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"edit": [
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"20230312\t王伟叶"
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"20230312\t王伟叶",
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"20240204\t王伟叶"
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],
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"same": [],
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"related": [],
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