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Question: Find the principle argument and moduli of a polynomial

Question:Find the principle argument and moduli of a polynomial

Jason Lee 15 Maple
polynomial solve homework
October 01 2017
0

The question is to find principle argument of the 5 roots of the polynomial z^5-5*z^4-z^2-2 

I used the Maple command:

Solve(z^5-5*z^4-z^2-2);

evalf(%);

argument(%);

But the Maple told me that expecting 1 argument but got 5.

I want to find all the argument and then use Max command to find the principle argument...it's doesn't work

Another similar thing is to find the moduli of a 5 roots of the polynomial z^5-5*z^4-z^2-2 

I got the same error as previous one ..

Can someone help me out ?

Cheers.
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