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#1 2016-02-17 22:28:43
- wintersolstice
- Real Member
- Registered: 2009-06-06
- Posts: 128
formulas of polynomials
Linear
Quadratic
Cubic
will get quartic soon 
Last edited by wintersolstice (2016-02-18 09:51:03)
Why did the chicken cross the Mobius Band?
To get to the other ...um...!!!
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#2 2016-02-18 13:27:23
- Newman
- Member
- Registered: 2015-09-21
- Posts: 42
Re: formulas of polynomials
Wow. Cool to see that evolution.
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#3 2016-02-19 02:52:33
- mathaholic
- Member
- From: Earth
- Registered: 2012-11-29
- Posts: 3,251
Re: formulas of polynomials
So hard to understand 
Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate
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#4 2016-02-19 13:23:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: formulas of polynomials
What are you having a problem with?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#5 2016-02-19 22:54:30
- wintersolstice
- Real Member
- Registered: 2009-06-06
- Posts: 128
Re: formulas of polynomials
What are you having a problem with?
I have solution expressed in terms of other variables which in turn are composed of others and if I do all the substitution it will be big and I want to simplify but am no good at that
Why did the chicken cross the Mobius Band?
To get to the other ...um...!!!
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#6 2016-02-20 02:25:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: formulas of polynomials
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#7 2016-02-20 08:32:49
- Newman
- Member
- Registered: 2015-09-21
- Posts: 42
Re: formulas of polynomials
I just discovered solving quadratic by "completing the square" so I explored cubic a bit and found this Method using "Depressing the cubic" (x = y - (b/3a)) and (y = s-t).
Curious if you guys prefer one method to the other in particular situations? Interesting stuff for us beginners.
Last edited by Newman (2016-02-20 08:40:02)
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#8 2016-02-20 10:51:16
- wintersolstice
- Real Member
- Registered: 2009-06-06
- Posts: 128
Re: formulas of polynomials
I'm wondering if I should post mine using the various variables substitution? btw its different from yours
btw my solution involves 8 variables to be defined (like in yours)
Last edited by wintersolstice (2016-02-20 11:07:09)
Why did the chicken cross the Mobius Band?
To get to the other ...um...!!!
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#9 2016-02-20 11:43:20
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: formulas of polynomials
Hi;
I doubt it would look like mine but post it if you like.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#10 2016-02-20 11:46:10
- wintersolstice
- Real Member
- Registered: 2009-06-06
- Posts: 128
Re: formulas of polynomials
Hi;
I doubt it would look like mine but post it if you like.
I've said it doesn't look like yours lol
anyway thanks I'll post it later
Why did the chicken cross the Mobius Band?
To get to the other ...um...!!!
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#11 2016-02-20 22:50:13
- wintersolstice
- Real Member
- Registered: 2009-06-06
- Posts: 128
Re: formulas of polynomials
Hopefully this is right.
To solve:
Define the following 8 variables A, B, C, D, E, F, G and H.
then the roots are:
Last edited by wintersolstice (2016-02-21 00:22:21)
Why did the chicken cross the Mobius Band?
To get to the other ...um...!!!
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