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#1 2009-01-21 07:32:29
- LuisRodg
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- Registered: 2007-10-23
- Posts: 322
Proof about the complex roots of a polynomial.
Could anyone offer some help?
Thanks.
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#2 2009-01-21 07:46:08
- Daniel123
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- Registered: 2007-05-23
- Posts: 663
Re: Proof about the complex roots of a polynomial.
We have that
I'm not sure, but can you not just say that because all the coefficients are real,
?Which means
, and so if z is a root then so is z_c.Last edited by Daniel123 (2009-01-21 07:51:35)
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#3 2009-01-21 09:06:46
- LuisRodg
- Real Member
- Registered: 2007-10-23
- Posts: 322
Re: Proof about the complex roots of a polynomial.
Ah yes. How could I have missed that? Simple proof.
Thanks Daniel!
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#4 2009-01-21 09:22:29
- Daniel123
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- Registered: 2007-05-23
- Posts: 663
Re: Proof about the complex roots of a polynomial.
No problem
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