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题目
题型:不详难度:来源:
已知实数m满足2x2-(2i-1)x+m-i=0,求m及x的值.
答案
∵实数m满足2x2-(2i-1)x+m-i=0,
∴2x2+x-2xi=-m+i,
∴2x2+x=-m,-2x=1,
∴m=0,x=-
1
2
核心考点
试题【已知实数m满足2x2-(2i-1)x+m-i=0,求m及x的值.】;主要考察你对复数的代数表示法及其几何意义等知识点的理解。[详细]
举一反三
已知复数z=1+i,求实数a,b使az+2b
.
z
=(a+2z)2
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A.iB.-iC.1D.-1
已知
a
1-i
=1+bi
,其中a,b是实数,i是虚数单位,则a+bi=______.
若复数z=1-mi(i为虚数单位,m∈R),若z2=-2i,则复数z的虚部为______.