Search found 31 matches

by korhonenpt
Thu Mar 24, 2011 2:46 am UTC
Forum: Science
Topic: Homework help-> Dynamics question
Replies: 1
Views: 474

Re: Homework help-> Dynamics question

Got it, sorry for any troubles!
by korhonenpt
Wed Mar 23, 2011 10:21 pm UTC
Forum: Science
Topic: Homework help-> Dynamics question
Replies: 1
Views: 474

Homework help-> Dynamics question

Hello, I have one last question on my dynamics homework and I'll be done for the evening. I feel as though I am making a stupid error, and that my work up to this point may be wrong, so if anyone can lend a hand I would appreciate it. I found the density and calculated the mass to be 317.71 kgs. But...
by korhonenpt
Tue Nov 02, 2010 2:06 am UTC
Forum: Science
Topic: AP Physics problem-- pulleys (of the frictionless variety)
Replies: 16
Views: 3531

Re: AP Physics problem-- pulleys (of the frictionless variet

I come to the xkcd forums to avoid having my enthusiasm for physics killed by a dry textbook. It's really refreshing to interact with people who enjoy science, and aren't in AP physics juat so they can get in to a better college. Apparently that's too much to ask for? Oh OK, so you just want to int...
by korhonenpt
Tue Nov 02, 2010 2:00 am UTC
Forum: Science
Topic: Darwinian revolution
Replies: 3
Views: 601

Re: Darwinian revolution

That wasn't necissary. I just needed help brainstorming, I think I have a pretty good one now though. Thanks for the sarcasm.
by korhonenpt
Mon Nov 01, 2010 11:20 pm UTC
Forum: Science
Topic: Darwinian revolution
Replies: 3
Views: 601

Darwinian revolution

no longer needed, delete please
by korhonenpt
Thu Nov 13, 2008 2:15 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0503: "Terminology"
Replies: 292
Views: 48598

Re: Terminology

New zeland and Nova Scotia look more alike.
by korhonenpt
Thu Sep 11, 2008 2:09 am UTC
Forum: Mathematics
Topic: A simple recursive formula question.
Replies: 4
Views: 1084

A simple recursive formula question.

Hello, in my pre cal class we were doing an assignment on recursive formuli. The series of numbers was pretty simple; {6,3,15,21,51,93 And for this we had to find the formula. The teacher told us that n>2, so the simple answer was t n =2t n-2 +t n-1 However, being the poor student that I am, failed ...
by korhonenpt
Sun Feb 17, 2008 10:05 pm UTC
Forum: Science
Topic: Decay Series: Essay
Replies: 5
Views: 1235

Re: Decay Series: Essay

Thanks guys. So just so i understand, A half life is a certain period of time. If there are 50 mg of a substance and it has a 20 min half life, after 20 min there is a 50% chance that each of those grams will be gone, (so we interpolate it to be 25 mg left) and each of those atoms that are not left,...
by korhonenpt
Sat Feb 16, 2008 5:51 pm UTC
Forum: Science
Topic: Decay Series: Essay
Replies: 5
Views: 1235

Decay Series: Essay

Hullo. I've been assigned an essay in my physics 12 course to write about Decay series and sequeneces. Thinking this would be a simple matter of half lives and geometric equations, I was confidant that I would do well in this, but upon doing some research i find it's a bit more complex. I understand...
by korhonenpt
Tue Jan 08, 2008 12:58 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Re: Factoring a quadratic

Thanks guys. Loads of help as always, hopefully someday i'll be able to repay you in kind.. haha
by korhonenpt
Mon Jan 07, 2008 4:52 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Re: Factoring a quadratic

ok awesome thanks, i'll just leave a note explaining this to her. I had an idea of how to do this, but wasn't sure at all. Also, (obviously) you were correct about my graphing calculator misleading me with asymptotes.

Cheers, and goodnight.
Pat.
by korhonenpt
Mon Jan 07, 2008 4:36 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Re: Factoring a quadratic

I edited my above post but I don't think you got it... but i dont think my teacher would like it if I said

"well, just put in five or 3.2. It'll work. Trust me" you know? haha
by korhonenpt
Mon Jan 07, 2008 4:30 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Re: Factoring a quadratic

Ok, I understand that the roots are at 5 and 16/5 but i don't quite get how, mathematically, you got there. What happened to the denominator? (number on the bottem, haha, i think its the denominator) Edit: like i get how 5 and 3.2 would work in the equation, but how do i show my work and steps to ge...
by korhonenpt
Mon Jan 07, 2008 4:07 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Re: Factoring a quadratic

Nope, 2/(x-3)+4/(x-4)=5 .

sorry my fault
by korhonenpt
Mon Jan 07, 2008 3:50 am UTC
Forum: Mathematics
Topic: Factoring a quadratic
Replies: 14
Views: 1430

Factoring a quadratic

Hello all, as in par to the rules I must advise you this is a bit of homework of mine. We start out with solve for x 2/(x-3)+4/(x-4)=5, and I've gotten it to ((-5x+16)(x-5))/(x-3)(x-4))=0, and I know from looking at my graphing calc. that it has three, not two roots. I have no idea where to go from ...
by korhonenpt
Mon Jan 07, 2008 3:48 am UTC
Forum: Mathematics
Topic: A tricky quartic (for me)
Replies: 22
Views: 2541

Re: A tricky quartic (for me)

Thanks guys, this helps a lot. sorry I'm not a very good mathematician-yet-.. haha...
by korhonenpt
Thu Jan 03, 2008 7:53 pm UTC
Forum: Mathematics
Topic: A tricky quartic (for me)
Replies: 22
Views: 2541

Re: A tricky quartic (for me)

Hey, I understand completley if you don't want to answer, because i know you've all got better things to do than teach me math, but i don't really know what that E type sign is, at all :(. which is why i said i have NO clue how to get that, if you would explain how it works and why it applies here, ...
by korhonenpt
Thu Jan 03, 2008 12:58 am UTC
Forum: Mathematics
Topic: A tricky quartic (for me)
Replies: 22
Views: 2541

Re: A tricky quartic (for me)

Fixed it, thanks a lot. I really love math but i make stupid mistakes sometimes :X

If x and y are two integers, where y>x,

((y/2)-((x-1)/2))*(x+y)=The sum of all integers from x to y, inclusive.

anyone know that? I have NO clue how to do this :|
by korhonenpt
Wed Jan 02, 2008 7:42 pm UTC
Forum: Mathematics
Topic: A tricky quartic (for me)
Replies: 22
Views: 2541

Re: A tricky quartic (for me)

Ugh, I'm an idiot. Thank you.

P.s, how would one get the roots of a quartic, preferably without using calculus of some sort, i'm only in grade 12.
by korhonenpt
Wed Jan 02, 2008 7:33 pm UTC
Forum: Mathematics
Topic: A tricky quartic (for me)
Replies: 22
Views: 2541

A tricky quartic (for me)

I have a puzzling question here, and I am not sure how to solve it. I am familiar for factoring for quadratics, but not for quartics.


7a2 * 3(4a2 - 6) = 14 + 6a2 * 42

and i simplified it to

82a4-252a2-32=0, please tell me if i made a mistake and where to go from here.
by korhonenpt
Sun Dec 16, 2007 12:36 am UTC
Forum: Mathematics
Topic: How would you simplify this
Replies: 24
Views: 2347

Re: How would you simplify this

I think by factoring somehow and cancelling. I'm not sure to as exactly how though

Edit: ahh, i have a pretty good idea. Won't say anything till aget the 17th, though.
by korhonenpt
Sun Dec 16, 2007 12:03 am UTC
Forum: Mathematics
Topic: Amusing answers to tests
Replies: 393
Views: 61990

Re: Amusing answers to tests

http://i11.tinypic.com/40nxf83.jpg Out of boredom I did this... please tell me if my answers are correct? :P Well at first we'll have to find the velocity at which the object touches the spring. Let's call its initial position a and the maximum extended position of the spring (just as it touches it...
by korhonenpt
Fri Dec 14, 2007 8:09 pm UTC
Forum: Science
Topic: Genertically Modified Organisms... Help please.
Replies: 18
Views: 2260

Re: Genertically Modified Organisms... Help please.

http://www.newscientist.com/channel/hea ... ood/dn1841 is an excellent example. :P thanks for any help you guys can give me.. i just found this one and it's perfect. Now I need a bunch more.. 8)
by korhonenpt
Fri Dec 14, 2007 7:47 pm UTC
Forum: Science
Topic: Genertically Modified Organisms... Help please.
Replies: 18
Views: 2260

Genertically Modified Organisms... Help please.

Hello; I have been having a lot of trouble with my term paper for Biology twelve. I find it difficult to find the things which I need to include in the paper, and with the combination of knowlage and minds here I thought that this would be the best place to try... I need to find five pros and five c...
by korhonenpt
Tue Dec 11, 2007 3:04 am UTC
Forum: Mathematics
Topic: Logarithm help
Replies: 8
Views: 1172

Re: Logarithm help

If it's not too much to ask, and i understand if I'm being a bother, haha, would you show me how to rewrite it using this problem like you said?
by korhonenpt
Mon Dec 10, 2007 7:21 pm UTC
Forum: Mathematics
Topic: Logarithm help
Replies: 8
Views: 1172

Re: Logarithm help

Thanks... to be honest i didn't know you could do that.
by korhonenpt
Mon Dec 10, 2007 7:05 pm UTC
Forum: Mathematics
Topic: Logarithm help
Replies: 8
Views: 1172

Re: Logarithm help

Sorry i made a small mistake, I edited it. one of the equations has an exponent of -3 on the c and the other has 4, how can I multiply them?

I'm probably being really stupid asking this, im sure its really easy for you guys but can the two exponents cancel out somehow and give me a normal c?
by korhonenpt
Mon Dec 10, 2007 6:52 pm UTC
Forum: Mathematics
Topic: Logarithm help
Replies: 8
Views: 1172

Logarithm help

Hello, I have a log problem which has stumped me. I know that the answer is at the tip of my brain, but I'm not quite sure where to go from here. The question is as follows: if log a b=c 4 and log b a=5/c 3 prove that c = 1/5. I have the left equation to logb/loga=c 4 and the right equation to loga/...
by korhonenpt
Sun Dec 02, 2007 5:06 am UTC
Forum: Mathematics
Topic: More advanced sinusodial functions.
Replies: 3
Views: 1269

Re: More advanced sinusodial functions.

Right, right. My mistake It's been a while. I thought it had something to do with a linear term added in there somewhere, thanks :P. So could you give me an example of how to graph... say a pendulum which starts swinging 1 cm from a wall to 5 cm from a wall, not losing any momentum, and slowly movin...
by korhonenpt
Sun Dec 02, 2007 4:26 am UTC
Forum: General
Topic: Who the dickens are you?
Replies: 10922
Views: 2418777

Re: POST HERE FIRST - INTRO THREAD THE THIRD

Hello, my name is Patrick and I enjoy math, I've browsed around the forums for a while and thought id make myself known :).
by korhonenpt
Sun Dec 02, 2007 4:22 am UTC
Forum: Mathematics
Topic: More advanced sinusodial functions.
Replies: 3
Views: 1269

More advanced sinusodial functions.

Hello; I am an honors mathematics student in canada, currently taking grade 12 advanced math, and planning on taking Advanced Calculus next year. I have a question that's been bothering me for a while, and I thought this would be the best place to know.[ Now, in a Sin function I know that(I think, i...

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