calc 3 help

Pretty much what the title says, all off-topic related posts can be posted here to share with everyone.
racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

calc 3 help

Post by racer12306 » Thu Feb 01, 2007 7:33 pm

dont know if anyone knows some of this but i do have a little problem with a problem on my hw. so if someone wouldn't mind please help...

the problem:
Consider the points P such that the distance from P to A(-1, 5, 3) is twice the distance from P to B(6, 2, -2). Show that the set of all such points is a sphere, and find its center and radius.

im not asking for someone to do it all out for me, just some help on getting going. then i should be fine.

thanks
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
Diablo0
2GN.org Owner/Admin
Posts: 12574
Joined: Thu Apr 15, 2004 11:20 pm
Location: Greenville, SC
Contact:

Post by Diablo0 » Thu Feb 01, 2007 8:07 pm

5 years ago I could have probably helped ya... not anymore lol. Sorry :(
-Jason
Black '02 Neon R/T | White '02 Neon R/T - SRT-4 Engine Swap
Image
^^^ no, that isn't what I look like haha
Try not to become a man of success but rather to become a man of value. - Albert Einstein

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 8:10 pm

you were in calc 3 5 years ago :shock: you must be a smart sumbitch
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 8:23 pm

Bawahahahaha, vector calculus....

I have the pleasure of taking that class again :shock:

Points A and B aren't on the surface of the sphere (B will be somewhere in it though), but everything that's 1:2 in length from A:B respectively is. I'm assuming all the points it maps are going to be on the surface/outside radius of the sphere.

Obviously you're going to need to plot out a bunch of points that meet the 2:1 ratio. You should be fine with plotting out where the octants will be. Hint that top octant will be at 2:1 between A and B giving you the colinear segment APB, where the other will be co-linear to that line, but will be in the order ABP. This will give you the 'top' and 'bottom' octant points of the sphere. Knowing these two points will allow you find the center and the radius. Then you can find the rest of the octants and once you have them will have to check that they all conform to a distance of 2 from A and 1 from B, and they probably will seeing as how it says so.

This seems like a long question IMO.

If that doesn't help, I could do up a sketch for you, but I'm busy dealing with my hell known as Numerical Analysis. Right now Matlab is teh gay. The big thinker was I thought it would plot inbetween A and B, but it doesn't.
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

User avatar
Diablo0
2GN.org Owner/Admin
Posts: 12574
Joined: Thu Apr 15, 2004 11:20 pm
Location: Greenville, SC
Contact:

Post by Diablo0 » Thu Feb 01, 2007 8:33 pm

racer12306 wrote:you were in calc 3 5 years ago :shock: you must be a smart sumbitch
I took Calc in HS, didn't get to 3 but I was a wizard when it came to math Acing every test that we had... just came easy to me :-? People in the class didn't like me much b/c I destroyed the curve lol.
-Jason
Black '02 Neon R/T | White '02 Neon R/T - SRT-4 Engine Swap
Image
^^^ no, that isn't what I look like haha
Try not to become a man of success but rather to become a man of value. - Albert Einstein

User avatar
rOniN
2GN Member
Posts: 1300
Joined: Fri Sep 09, 2005 1:21 am
Location: Honolulu, HI

Post by rOniN » Thu Feb 01, 2007 8:53 pm

Jason are you from japan?
Image
-Chad
2009 Dodge Viper VOI #66
2010 Dodge Ram Power Wagon - Sold
2010 Dodge Challenger SRT-8 - Sold
2009 Dodge Challenger SRT-8 -Sold
2004 Dodge Neon SRT-4 - Sold
1998 Dodge Neon R/T

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 8:57 pm

rOniN wrote:Jason are you from china?
fixed

some of them chinese are insanely good at math.

thanks for the help matt. ill be reading it more thoroughly in a few min. i have heard matlab is a pita
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 9:53 pm

I'll take 1 fuck yeah for getting Matlab to work finally.

I'm gonna grab a beer and celebrate :mrgreen:
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 9:56 pm

drink one for me since im still confused. i probably need to read some more.

i do appreciate your help
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
bad04srt
2GN Member
Posts: 2473
Joined: Sun Apr 09, 2006 6:45 pm
Location: chitown

Post by bad04srt » Thu Feb 01, 2007 10:01 pm

im in calc 1 AP right now
Image

Chibits12
2GN Member
Posts: 1174
Joined: Fri Nov 17, 2006 9:16 am
Location: Hagerstown, MD
Contact:

Post by Chibits12 » Thu Feb 01, 2007 10:12 pm

There's some calc involved with my Econ 456:Law and Economics class but nothing ridiculous. :D
Image

2006 Cobalt SS 2.4. Completely stock.

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 10:23 pm

Cricky1224 wrote: but nothing ridiculous. :D
like what matt and i are doing
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 10:35 pm

It's not so much that's it's hard for me, I've just really been thrown into the deep end. Before my depth of calculus used to be calculating simple volumes (basic introductory class in college, nothing heavy duty at all). Now I'm in the midst of 3rd year University Mechanical Engineering calculus going holy shit all the time trying to learn stuff I "should know" and learn new material at the same time.

Picture is worth a thousand words (did this over beer :mrgreen:).


http://www.feoa.net/modules.php?name=Co ... fullsize=1
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 10:51 pm

im still pretty confused about it. this cant be good, a week into class and im already lost. i appreciate what you have done. im going to try to ask the instructor to go through it.

im definitly going to sit closer to the board. he rights small and it hard to see from the back which is where i have had to sit the last couple classes because the drive to school too a lot longer than i planned. guess its time to leave earlier
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 10:58 pm

welcome to my hell....

welcome to Engineering :mrgreen:
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 11:05 pm

yeah, that is scaring me too because i too am a mechanical engineering major
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
TheNumberOneD
2GN Member
Posts: 729
Joined: Sun Aug 27, 2006 11:25 pm
Location: Texas
Contact:

Post by TheNumberOneD » Thu Feb 01, 2007 11:07 pm

...

i'm taking Trigonometrey in Community College right now...

Sine Theta
Cosine Theta
Tangent Theta


what else do you need to know!?
~Daniel

'2005 Dodge Neon SRT-4

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 11:09 pm

haha, that was 10th grade stuff for me, dabled a little with it in 8th grade. i wish i could do that stuff all throughout college. i would be a straight A student.
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 11:13 pm

God, I remember when I did that shit. I would kill for easy math like that now.

Seriously man, don't let it get to you. Grab a beer, have a smoke, whatever. It's hillarious because so many classes I come out of and everybody is like "WTF did we just do? I feel dumber!!!" Just keep at it and work hard and you'll pass fine man.
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

racer12306
Junior Admin
Posts: 16015
Joined: Sun Oct 24, 2004 8:53 pm
Location: Baltimore, MD
Contact:

Post by racer12306 » Thu Feb 01, 2007 11:15 pm

the think i hate about it is, a lot of engineering wont even use this stuff. when i worked at black and decker i asked do you use calc 3 stuff. the engineers said no, they use a lot of calc 1 and a little of calc 2
-Frank
Member of Spork Racing
Forum issues: racer12306@2gn.org
Forum Behavior
Support your favorite forum, DONATE!

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Thu Feb 01, 2007 11:25 pm

Biggest kick in the jimmies ever.
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

User avatar
bad04srt
2GN Member
Posts: 2473
Joined: Sun Apr 09, 2006 6:45 pm
Location: chitown

Post by bad04srt » Fri Feb 02, 2007 12:07 am

^kicked racer in the jimies
Image

User avatar
Bella Lugrossi
2GN Member
Posts: 1143
Joined: Mon Oct 30, 2006 2:25 pm
Location: The Great Northwest
Contact:

Post by Bella Lugrossi » Fri Feb 02, 2007 12:08 am

hahaha. i think you posted in the wrong thread. :lol:
ImageImage

"He who makes a beast out of himself, gets rid of the pain of being a man"
SILVER-ES wrote:April, you are the greatest!

User avatar
bad04srt
2GN Member
Posts: 2473
Joined: Sun Apr 09, 2006 6:45 pm
Location: chitown

Post by bad04srt » Fri Feb 02, 2007 12:09 am

lol....ya i when i clicked this they were right next to each other lol....shut up i've had a long, terrible week lol....getting dumped sucks :cry:
Image

User avatar
Bella Lugrossi
2GN Member
Posts: 1143
Joined: Mon Oct 30, 2006 2:25 pm
Location: The Great Northwest
Contact:

Post by Bella Lugrossi » Fri Feb 02, 2007 12:11 am

but i thought she was a bitch? i'm sorry. i don't really mean to poke fun that bad. i don't know the whole thing.
ImageImage

"He who makes a beast out of himself, gets rid of the pain of being a man"
SILVER-ES wrote:April, you are the greatest!

User avatar
Haganracing
2GN Member
Posts: 4087
Joined: Tue Jan 30, 2007 11:23 pm
Location: Frederick, Maryland
Contact:

Post by Haganracing » Fri Feb 02, 2007 12:12 am

I have no clue how to do that problem, that is a math problem right?

im just glad im done with highschool, i graduated early.

-chris
occasional demons wrote:So maybe a FuzzyDanteHagan sammich might just beat a FuzzyHagan. :-k
Danteneon wrote:My advice is to fight those urges and enjoy the fact that you have both X and Y chromosomes. And an SRT. And your hand. You don't need a girl.

03blackrt
2GN Member
Posts: 3993
Joined: Fri Mar 24, 2006 2:53 pm

Post by 03blackrt » Fri Feb 02, 2007 12:33 am

Leibniz and Newton are evil bastards.... nuff said.

User avatar
fixitmattman
2GN Member
Posts: 1930
Joined: Sun Jul 24, 2005 10:05 pm
Location: North York

Post by fixitmattman » Fri Feb 02, 2007 12:41 am

Newton really pisses me off. Seriously, how does one fucking guy think of not one heavy duty equation, but all the heavy duty equations and bullshit that guys thought of. The guy has some heavy duty equation in every class I go to and he didn't even have a fucking calculator for fuck sakes.
http://www.cardomain.com/profile/fixitmattman
How to fix your car:
1. Buy a Haynes manual
2. Read Haynes maual
3. Read and search appropriate threads, trust us, it's been covered before
4. Fix car
5. Consume beer of job well done

Mr Josh Zombie
2010 Platinum Contributor
Posts: 8357
Joined: Tue Aug 22, 2006 8:43 pm
Location: Toledo, OH

Post by Mr Josh Zombie » Fri Feb 02, 2007 10:07 am

I can't do math... expect for Trig.
I aced that NO problem in high school. I still don't know my multiplication tables 100% though. :lol:
Modify your Car • Modify your Body • Modify your Life

kplaya186
2GN Member
Posts: 585
Joined: Fri Mar 18, 2005 1:18 pm
Location: East Lansing
Contact:

Post by kplaya186 » Fri Feb 02, 2007 11:52 am

Opi wrote:I can't do math... expect for Trig.
I aced that NO problem in high school. I still don't know my multiplication tables 100% though. :lol:
Calc 3 is primary based around Trig. I am in calc 3 right now, and I could probably help on that question, but I don't feel like doing any more work :lol: I am a lazy college student, what can I say?

Post Reply

Return to “Off-Topic”