Math Is Fun Forum
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#1 2012-04-10 03:11:23
- reallylongnickname
- Member
- Registered: 2011-03-30
- Posts: 50
Qaud Q.
This is the Q. Im have problem with. The fractions and the integer thing throw me off. "Write a quadratic eq. with roots of 2/3 and - 4/5 in the form
where a, b, c are integers. "Example of what I do understand about a similar type of math problem:
general form with roots 6 and -7
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#2 2012-04-10 05:18:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
Hi;
Now this one may or may not have the smallest coefficients but it used the method you suggested to get them.
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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#3 2012-04-10 05:37:50
- reallylongnickname
- Member
- Registered: 2011-03-30
- Posts: 50
Re: Qaud Q.
How did u get that?
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#4 2012-04-10 05:39:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
When you expand
what do you get?
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 2012-04-10 05:45:57
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Qaud Q.
Hi rln
I have hidden the following answer because this is what I would like you to discover on your own.
bobbym
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#6 2012-04-10 05:47:48
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
Hi anonimnystefy;
Please hide your answer. I am trying to get him to do that on his own.
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 2012-04-10 05:53:27
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Qaud Q.
There is no excplicite answer in there. I just told him the method, and you can explain to him. If you don't need it then feel free to delete it altogrlether.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#8 2012-04-10 05:59:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
Hi;
I do not want to delete it, so I have hidden it. The method is where I am leading him to discovering on his own.
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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#9 2012-04-10 06:01:32
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Qaud Q.
Ok. You really could've just deleted it.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#10 2012-04-10 06:07:06
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
Not necessary. He is just one little fact away from solving the problem himself. When he figures it out which he will he can then see your solution as further evidence that it is not just my idea.
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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#11 2012-04-10 06:09:23
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Qaud Q.
Okay,may I then present him with a helpful link about the Bezout theorem?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#12 2012-04-10 06:11:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Qaud Q.
By all means!
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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#13 2012-04-10 06:21:23
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Qaud Q.
Here is a link from Wikipeadia:Little Bezout's theorem
Last edited by anonimnystefy (2012-04-10 06:21:50)
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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