前言
从一个数学老师的角度来解析2018高考,结合学生的实际学情,给出学习建议。
一、选择题
№01【题文】 \(i(2+3i)=\)【\(\hspace{2em}\)】
A.\(3-2i\hspace{4em}\) B. \(3+2i\hspace{4em}\) C. \(-3-2i\hspace{4em}\) D.\(-3+2i\hspace{4em}\)
【解析】\(i(2+3i)=-3+2i\),故选D,送分题。
【说明】文科考查复数的乘法运算,理科考查复数的除法运算。
№02【题文】 已知集合\(A=\{1,3,5,7\}\),\(B=\{2,3,4,5\}\),则\(A\cap B=\)【\(\hspace{2em}\)】
A.\(\{3\}\hspace{4em}\) B. \(\{5\}\hspace{4em}\) C. \(\{3,5\}\hspace{4em}\) D.\(\{1,2,3,4,5,7\}\hspace{4em}\)
【解析】\(A\cap B=\{3,5\}\),故选C,送分题。
二、填空题
三、解答题
网上的参考答案
![](https://images2018.cnblogs.com/blog/992978/201806/992978-20180618155610200-1120976501.png)
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![](https://images2018.cnblogs.com/blog/992978/201806/992978-20180618155704129-209628277.png)
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