SOLUTION: if |z|=3 then determine the least value of |z+1/z|=

Question 242873: if |z|=3 then determine the least value of |z+1/z|=
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!


, so  and 



Therefore:





This is a minimum when , thus

 has minimum value 

Edwin

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