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若f(z)=2z+z-3i,f(z+i)=6-3i,求f(-z).若f(z)=2Z+A-3i,f(A+i)=6-3i,A为Z的共轭复数;求:f(-z).刚才没注意Z的共轭复数没显示出来,非常抱歉.f(-z)=-6-4i
题目详情
_ _
若f(z)=2z+z-3i,f(z+i)=6-3i,求f(-z).
若f(z)=2Z+A-3i,f(A+i)=6-3i,A为Z的共轭复数;
求:f(-z).
刚才没注意Z的共轭复数没显示出来,非常抱歉.
f(-z)=-6-4i
若f(z)=2z+z-3i,f(z+i)=6-3i,求f(-z).
若f(z)=2Z+A-3i,f(A+i)=6-3i,A为Z的共轭复数;
求:f(-z).
刚才没注意Z的共轭复数没显示出来,非常抱歉.
f(-z)=-6-4i
▼优质解答
答案和解析
A+i代入f(z)
(A+i)=2A+2i+A-3i=3A-i=6-3i
A=2-2i/3
Z=2+2i/3
把-Z代入f(z)
f(-Z)=-2Z+A-3i
=-4-4i/3+2-2i/3-3i
=-2-5i
解毕
(A+i)=2A+2i+A-3i=3A-i=6-3i
A=2-2i/3
Z=2+2i/3
把-Z代入f(z)
f(-Z)=-2Z+A-3i
=-4-4i/3+2-2i/3-3i
=-2-5i
解毕
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