修改7947题面
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"007947": {
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"007947": {
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"id": "007947",
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"id": "007947",
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"content": "已知函数$f(x)=x^3-3x$.\\\\\n(1) 试求函数$y=f(x)$的零点;\\\\\n(2) 求证: 函数$f(x)=x^3-3x$在$[1,+\\infty)$上是增函数;\\\\\n(3) 是否存在自然数$n$, 使$f(n)=1000$? 若存在, 求出一个满足条件的$n$; 若不存在, 请问明理由.",
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"content": "已知函数$f(x)=x^3-3x$.\\\\\n(1) 试求函数$y=f(x)$的零点;\\\\\n(2) 求证: 函数$f(x)=x^3-3x$在$[1,+\\infty)$上是严格增函数;\\\\\n(3) 是否存在自然数$n$, 使$f(n)=1000$? 若存在, 求出一个满足条件的$n$; 若不存在, 请说明理由.",
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"objs": [
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"objs": [
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"K0219003B",
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"K0219003B",
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"K0223004B"
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"K0223004B"
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"usages": [],
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"usages": [],
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"origin": "二期课改练习册高一第一学期",
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"origin": "二期课改练习册高一第一学期",
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"edit": [
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"edit": [
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"20220726\t王伟叶"
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"20220726\t王伟叶",
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"20231127\t王伟叶"
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],
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],
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"same": [],
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"same": [],
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"related": [],
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"related": [],
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