高考数学(理科)专题练习
数形结合思想
题组1利用数形结合思想解决方程的根或函数零点问题
1.方程
<Object: word/embeddings/oleObject1.bin>
的解的个数是(
)A.1B.2C.3D.42.已知函数
<Object: word/embeddings/oleObject2.bin>
,则下列结论正确的是(
)A.<Object: word/embeddings/oleObject3.bin>
有三个零点,且所有零点之积大于
<Object: word/embeddings/oleObject4.bin>
B.<Object: word/embeddings/oleObject5.bin>
有三个零点,且所有零点之积小于
<Object: word/embeddings/oleObject6.bin>
C.<Object: word/embeddings/oleObject7.bin>
有四个零点,且所有零点之积大于1
D.<Object: word/embeddings/oleObject8.bin>
有四个零点,且所有零点之积小于1
3.(2016 ...


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