【简答题】已知m∈R,复数z= m(m+2) m-1 +( m 2 +2m-3)i ,当m为何值时, (1)z∈R; (2)z是虚数; (3)z是纯虚数; (4) . z = 1 2 +4i .
【单选题】What format is adopted in the first paragraph?
B.
Feature-by-feature format
【单选题】There are several debate formats. What format is our focus on ?
【判断题】通常,绝对湿度的水平分布与纬度有关,其中绝对湿度最大的地区出现在赤道地区
【单选题】已知 z 1 = m 2 -3 m + m 2 i, z 2 =4+(5 m +6)i,其中 m 为实数,i为虚数单位,若 z 1 - z 2 =0,则 m 的值为
【简答题】通常,绝对湿度的水平分布与纬度有关,其中绝对湿度最大的地区出现在:( )地区
【简答题】已知m∈R,复数 z= m(m+2) m-1 +( m 2 +2m-3)i ,若 . z = 1 2 +4i ,则m=______.
【简答题】阅读理解 You have heard of Webster Toys. Webster have made good, safe, interesting toys for more than a hundred years. Now, we sell them, and children play with them, in countries from New Zealand to Norw...
【简答题】已知复数z=(m 2 -2m-3)+(m 2 -3m-4)i,求实数m的值使z为纯虚数.