修正14665题面

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wangweiye7840 2024-02-04 14:24:08 +08:00
parent 22f1f11b65
commit db4395d998
1 changed files with 3 additions and 2 deletions

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@ -410263,7 +410263,7 @@
},
"014665": {
"id": "014665",
"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$b<0$}",
"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$c=0$}",
"objs": [],
"tags": [
"第二单元"
@ -410275,7 +410275,8 @@
"usages": [],
"origin": "2023年空中课堂高三复习课28",
"edit": [
"20230312\t王伟叶"
"20230312\t王伟叶",
"20240204\t王伟叶"
],
"same": [],
"related": [],