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#1 2013-02-07 15:30:23

cooljackiec
Member
Registered: 2012-12-13
Posts: 162

imaginary numbers

How many pairs of integers (b,c) satisfy the equation


I see you have graph paper.
You must be plotting something
lol

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#2 2013-02-07 20:09:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#3 2013-02-07 23:40:39

scientia
Member
Registered: 2009-11-13
Posts: 222

Re: imaginary numbers

So where are the imaginary numbers? eek

Last edited by scientia (2013-02-07 23:41:46)

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#4 2013-02-08 00:53:43

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,536

Re: imaginary numbers

hi scientia

Nice solution.  smile

So where are the imaginary numbers?

Perhaps you have to imagine them.  roflol

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#5 2013-02-08 01:27:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Hi ;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#6 2013-02-08 02:41:23

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: imaginary numbers

Hi bobbym

Those numbers you posted aren't imaginary either...


“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

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#7 2013-02-08 02:46:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Why not? What did I do wrong?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#8 2013-02-08 02:59:00

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: imaginary numbers

Those are not imaginary numbers. They are complex!


“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

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#9 2013-02-08 03:03:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Hmmmm, you got me. You are correct!


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#10 2013-02-08 03:11:02

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: imaginary numbers

Yes, yes I did.


“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

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#11 2013-02-08 03:20:20

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Them there is fightin words where we all come from. - Gary Cooper


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

#12 2013-02-08 11:52:33

cooljackiec
Member
Registered: 2012-12-13
Posts: 162

Re: imaginary numbers

Compute |5-12i|+|3-4i|.


I see you have graph paper.
You must be plotting something
lol

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#13 2013-02-08 15:07:39

cooljackiec
Member
Registered: 2012-12-13
Posts: 162

Re: imaginary numbers

a) Suppose we graph every point z  in the complex plane such that |z| = 4. What shape results?

b) What is the graph of the equation |z-2i| = 3


I see you have graph paper.
You must be plotting something
lol

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#14 2013-02-08 21:05:02

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,750

Re: imaginary numbers

Hi cooljackiec;

|5-12i|+|3-4i| = 13 + 5 = 18


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Online

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