配套习题-如何根据根的特征确定参数的取值范围 -【青果学院】

本课配套习题挑战模式1/5

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单选题

难度系数：

1.已知关于x的一元二次方程x²-（m-3）x+m-4=0，若方程有一个根大于4且小于8，求m的取值范围（）

A: 8＜m＜12

B: m＞12

C: m＜8

D: m＞8

提示1：IOihqOekuuWHuuaWueeoi+eahOino++8jOagueaNruaWueeoi+acieS4gOS4quagueWkp+S6jjTkuJTlsI/kuo445YiX5Ye65LiN562J5byP77yM5rGC5Ye65LiN562J5byP55qE6Kej6ZuG5Y2z5Y+v56Gu5a6a5Ye6beeahOiMg+WbtC4=
答案：QQ==
6Kej77ya5pa556iL5Y+Y5b2i5b6X77ya77yIeC0x77yJ77yIeC1tKzTvvIk9MO+8jDxicj7op6PlvpfvvJp4PHN1Yj4xPC9zdWI+PTHvvIx4PHN1Yj4yPC9zdWI+PW0tNO+8jDxicj7moLnmja7popjmhI/lvpfvvJo077ycbS0077ycOO+8jDxicj7op6PlvpfvvJo477ycbe+8nDEyLiA=

本课配套习题挑战模式2/5

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单选题

难度系数：

2.已知关于x的方程x²+（k-3）x+k²=0一根小于1，另一根大于1，则k的取值范围是（　　）

A: -2＜k＜1

B: -1＜k＜2

C: k＞2

D: k＞1

提示1：IOWIpOWIq+W8j+Wkp+S6jjA=
提示2：IO+8iHg8c3ViPjE8L3N1Yj4tMe+8ie+8iHg8c3ViPjI8L3N1Yj4tMe+8ie+8nDA=
提示3：IOWIqeeUqOagueezu+WFs+ezuw==
答案：QQ==
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

本课配套习题挑战模式3/5

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单选题

难度系数：

3.已知关于x的一元二次方程x²-2mx-3m²+8m-4=0的两个实数根一个小于5，另一个大于2，则m的取值范围为（）.

A: m＜0或m＞

B: m＜0

C: m＞

D: 0＜m＜

提示1：IOWFiOaxguWHuuWOn+aWueeoi+eahOS4pOS4quWunuaVsOague+8jOagueaNruS4pOS4quWunuaVsOagueS4gOS4quWwj+S6jjXvvIzlj6bkuIDkuKrlpKfkuo4y77yM5YiX5Ye65LiN562J5byP57uE77yM5rGC5Ye6beeahOWPluWAvOiMg+WbtC4=
答案：QQ==
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

本课配套习题挑战模式4/5

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单选题

难度系数：

4.已知关于x的方程x²+2px+1=0的两个实数根一个小于1，另一个大于1，则实数p的取值范围是（）

A: P＞1

B: P＜-1

C: p＜1

D: p＞-1

提示1：IOWIpOWIq+W8j+Wkp+S6jjA=
提示2：IOWIqeeUqOagueezu+WFs+ezuw==
答案：Qg==
6Kej77ya4oi15YWz5LqOeOeahOaWueeoi3g8c3VwPjI8L3N1cD4rMnB4KzE9MOacieS4pOS4quWunuaVsOague+8jDxicj7iiLTilrM9NHA8c3VwPjI8L3N1cD4tNO+8njDvvIw8YnI+6Kej5b6X77yaUO+8njHmiJZQ77ycLTHvvIw8YnI+4oi15Lik5Liq5a6e5pWw5qC55LiA5Liq5bCP5LqOMe+8jOWPpuS4gOS4quWkp+S6jjE8YnI+4oi077yIeDxzdWI+MTwvc3ViPi0x77yJ77yIeDxzdWI+Mjwvc3ViPi0x77yJ77ycMDxicj7ljbN4PHN1Yj4xPC9zdWI+eDxzdWI+Mjwvc3ViPi3vvIh4PHN1Yj4xPC9zdWI+K3g8c3ViPjI8L3N1Yj7vvIkrMe+8nDA8YnI+4oi0MSsycCsx77ycMDxicj7iiLRQ77ycLTE8YnI+57u85LiKcO+8nC0xPGJyPuKItOmAiUI=

本课配套习题挑战模式5/5

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单选题

难度系数：

5.关于x的一元二次方程2ax²-2x-3a-2=0的一根大于1，另一根小于1，则a的取值范围是（　　）

A: a＞0或a＜-4

B: a＜-4

C: a＞0

D: -4＜a＜0

提示1：IOmcgOaWueeoi+eahOWIpOWIq+W8j+Wkp+S6jjA=
提示2：IO+8iHg8c3ViPjE8L3N1Yj4tMe+8ie+8iHg8c3ViPjI8L3N1Yj4tMe+8ie+8nDA=
提示3：IOWIqeeUqOagueezu+WFs+ezuw==
答案：QQ==
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本课配套习题挑战模式5/5

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