数学理科课件课本跟练习数学第十三章节.ppt

第十三章数系的扩充

——复数;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;【点评】本题是集合与两个复数相等的交汇题，关键是灵活运用集合中元素关系求解．

【变式与思考】已知x、y互为共轭复数，且(x＋y)2－3xyi＝4－6i，则x＋y的值为()

A．2iB．－2i

C．2或－2D．－2i或－2i

;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;/jty/main/index.shtm;【答案】B

【考题赏析】集合、复数、解方程巧妙地揉和在一起，知识性强，难度中等．

;/jty/main/index.shtm;【答案】A

;/jty/main/index.shtm;/jty/main/index.shtm;ThankYou!;1、字体安装与设置