Friday, 6 November 2015

complex analysis - Did I misunderstand it or my book is wrong?

From my book, Prove that if zC where |z|1 then |Im(1+ˉz+z2)|<3



but, I have |Im(1+ˉz+z2)|3




From |Im(1+ˉz+z2)| , I have



|Im(1+ˉz+z2)||1+ˉz+z2||1|+|ˉz|+|z|21+|1|+|1|=3



Please check my solution, Thank you.

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