From my book, Prove that if z∈C 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|2≤1+|1|+|1|=3
Please check my solution, Thank you.
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