题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065917-61071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065917-48654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065918-22531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065918-54760.png)
![]() | … | ![]() | ![]() | ![]() | 1 | 2 | 3 | 4 | … |
![]() | … | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | … |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-85668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-21680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-64785.png)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-69380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-69179.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-16278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-36840.png)
C.
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-94555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-36840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-16278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065921-67789.png)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065917-61071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-21680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065917-61071.png)
又知
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065920-85668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065919-22533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065919-52832.png)
∴对应的x的值在-1 与0之间,即-1 <x1<0.
y=0在y=
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065919-52832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065919-22533.png)
故选A.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065909-62469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065909-24800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065910-22657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065910-83518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065910-94612.png)
小题1:若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065910-71433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065910-91634.png)
小题2:若实数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065911-46459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065911-13430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065911-77350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065856-24447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-20275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-43664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-56376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-52701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-30665.png)
小题1:求
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-56376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-43664.png)
小题2:现有二次函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065858-48974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-56376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065858-20168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-43664.png)
量
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-43664.png)
小题3:在(2)的结论下,若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065857-56376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065858-20168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065858-87359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065851-93548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065851-25612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065851-25612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065852-74546.png)
A.4 | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-20334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-82974.png)
小题1:求证:无论
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-70378.png)
小题2:若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-70378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-86984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065841-20334.png)
小题3:若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065842-35052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065842-89267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065834-62076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065834-86710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-30005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-37124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-65007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-25168.png)
小题1:当函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-72581.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065835-86982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-53147.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-37821.png)
小题2:在平面直角坐标系中,一次函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-48194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-43537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-84043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-60344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-23980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-67239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-23980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-84043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-67239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-21701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065836-48194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019065837-21701.png)
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