dissident+minority

殷娣维3553已知复数z1、z2是方程x^2+2x+2=0的两个根.求z1和z2求:(1)z1和z2(2)z3=z1*z2+mi(∈R)且|z3|=3,求m的值及复数z3 -
封重注17331245277 ______[答案] 1)判别式⊿=2^2-2*4=-4 此时求根公式为(-b±i√(-⊿))/2a 所以z1=-1+i,z2=-1-i 2)z3=z1*z2+mi=2+mi |z3|=3,所以4+m^2=9, 所以m=±√5 z3=2±√5

殷娣维3553设T是一个正则m元树,它有i个内顶点(出度为m),如果E为所有内顶点深...
封重注17331245277 ______ Act 1The church of Sant'Andrea della ValleAngelotti, an escaped political offender, seeks refuge in the church of Sant'Andrea della Valle where his family has a chap...