1.已知全集u={1,2,3,4,5,6,7),m={1,3,5,6},n={2,3,5},则cu(m高考资源网(ks5u.com),中国最大的高考网站,您身边的高考专家。 src="/article/article/20150415102227001.gif" width=16 height=20> n)=
a.{1,4,6,7} b.{2,4,6,7} c.{1,2,4,6,7} d.{1,3,4,6,7}
2.i.z=1一i(i为虚数单位),则z=
a.-1+i b.-1-i c.1+i d.1-i
资源难易程度:★★★★★★★★★★★★★★★
高考资源网版权所有 ©2005-2014
未经许可,盗用或转载本站资料者,本站将追究其法律责任!