IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => University => Topic started by: astarmathsandphysics on October 06, 2008, 11:07:33 am

Title: Maths & Physics Help
Post by: astarmathsandphysics on October 06, 2008, 11:07:33 am
Post your Degree questions here to get the answers back asap from someone with 3 maths/physics degrees.
Title: Re: Maths & Physics Help
Post by: roma on February 24, 2009, 10:05:55 pm
Hi, needed help on my coursework, would be great if you could help

Thankyou
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 24, 2009, 10:07:40 pm
When is your deadline?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 24, 2009, 10:08:52 pm
Look tomorrow.
Title: Re: Maths & Physics Help
Post by: roma on February 25, 2009, 09:19:38 pm
its due 9th march, when do u think you will be able to look at it?
Title: Re: Maths & Physics Help
Post by: roma on February 27, 2009, 09:21:12 pm
you haven't uploaded the work yet, when will you be able to?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 27, 2009, 09:42:47 pm
Spank me roma, give me a good slap around the head because I havent uploaded your coursework yet. Fact is, now on Friday 945pm I am in no condtion to add 2 numbers together.
Title: Re: Maths & Physics Help
Post by: roma on February 28, 2009, 12:10:55 pm
will you be able to do it today then?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 28, 2009, 12:17:00 pm
Yes. Am free this afternoon from 3 o'clock
Title: Re: Maths & Physics Help
Post by: saifalan on February 28, 2009, 12:44:19 pm
How do you even get all this time to do it all ?? Plz tell me ur secret, caus I love to work.
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 28, 2009, 01:40:31 pm
Be obsessed.
Title: Re: Maths & Physics Help
Post by: roma on February 28, 2009, 05:35:15 pm
ok, how about now then?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 28, 2009, 07:05:23 pm
finished it. Got to go out now but back in 2 hours. Will post it then.
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 28, 2009, 09:28:47 pm
Trouble trouble trouble. My scanner has saved it as 4x128MB file which means I can't post it on the forum or email it. Suggest I fax it or upload it to www.courseworkbank.info
Title: Re: Maths & Physics Help
Post by: roma on March 01, 2009, 02:38:05 pm
where can i find it on that website?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on March 01, 2009, 02:44:34 pm
Will pm you
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on March 05, 2009, 01:12:41 pm
Another satisfied customer. My scanner saved all the scans as a 128MB file and I had still to learn to use Latex. Luckily she lives in London so I met her at a train station on my way to a student and gave her a brown envelope.
Title: Re: Maths & Physics Help
Post by: roma on March 18, 2009, 12:42:38 pm
Hello, me again! I've been a set a coursework but i will be tested on it. So i have to learn the method used in each question and i will have a test on it which will require me to use the same methods on the coursework. I was hoping you could have a look at it for me, so that i know im learning the right stuff

Thankz
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on March 18, 2009, 12:55:28 pm
Yes he it is posted here. Cant tell now am on phone
Title: Re: Maths & Physics Help
Post by: roma on March 27, 2009, 12:17:55 pm
have you looked at it yet?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on April 08, 2009, 07:12:12 am
Dont i tell you make a nuisance of yourself? Am asleep.
Title: Re: Maths & Physics Help
Post by: roma on April 08, 2009, 12:40:47 pm
Can you PLEASE help me then?
Title: Re: Maths & Physics Help
Post by: roma on May 06, 2009, 06:39:58 pm
Hey, i needed some help on this question.

Prove p = 0.08512 B = 0.01881 A = 0.03119 simultaneously,
20 =1/(A + B)
23 =1/(A + Be^-5p)
25.5 =1/(A + Be^-10p)
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 06, 2009, 07:42:44 pm
2 hours
Title: Re: Maths & Physics Help
Post by: roma on May 06, 2009, 09:13:44 pm
Any luck?
Title: Re: Maths & Physics Help
Post by: omarsubei on May 06, 2009, 10:38:35 pm
Hi my exam's in 12 hours, and I just don't get statistics. Please help with this question,

Consider the 10 data items x1, x2, ... x10. Given that Sum(xi)  = 1341 and the standard deviation is 6.9, find the value of the mean .

The answer is:

6.92 = 1341/10 - mean2

and then the answer works out to be +/- 9.3 .

I get the method, I just don't get why they divided by 10 ?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 06, 2009, 10:47:21 pm
There must be more to the question than that. Cabn you post the question?
Title: Re: Maths & Physics Help
Post by: omarsubei on May 06, 2009, 11:01:01 pm
I'm sure that's the whole question. I don't know what you mean by post it
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 06, 2009, 11:13:23 pm
This is an old topic . Can you you ropost to make it current?
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 07, 2009, 09:05:07 am
Quote from: roma on May 06, 2009, 06:39:58 pm
Hey, i needed some help on this question.

Prove p = 0.08512 B = 0.01881 A = 0.03119 simultaneously,
20 =1/(A + B)
23 =1/(A + Be^-5p)
25.5 =1/(A + Be^-10p)

1)20 =1/(A + B)
2)23 =1/(A + Be^-5p)
3)25.5 =1/(A + Be^-10p)


Turn everything upside down

1/20 =(A + B)
1/23 =(A + Be^-5p)
1/25.5 =(A + Be^-10p)
top take away next onw gives B-Be^-5p=3/460 (4) and top take the third gives 5.5/510=B-Be^-10p Divide these 2 equtions by each other to give

(1-e^-5p)/(1-e^-10p)=0.604

sub x=e^-5p to give(1-x)/(1-x2)=0.604

so 1-x=0.604-0.604x2
so0.604x2-0.604x+0.396=0 Solve this and sub into 4 to find B then into 1 to find A
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 07, 2009, 09:09:54 am
Quote from: omarsubei on May 06, 2009, 10:38:35 pm
Hi my exam's in 12 hours, and I just don't get statistics. Please help with this question,

Consider the 10 data items x1, x2, ... x10. Given that Sum(xi)  = 1341 and the standard deviation is 6.9, find the value of the mean .

The answer is:

6.92 = 1341/10 - mean2

and then the answer works out to be +/- 9.3 .

I get the method, I just don't get why they divided by 10 ?

Did you mean Sum(xi2)?
Title: Re: Maths & Physics Help
Post by: roma on May 07, 2009, 10:45:21 pm
It doesn't work
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on May 07, 2009, 10:49:02 pm
what doesnt work?
Title: Re: Maths & Physics Help
Post by: haziq91 on February 08, 2012, 05:43:01 pm
Can anyone help me with this coursework..  I can't do q1   and question 2.....   they are quite difficult...


thanks in advance
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 09, 2012, 02:37:45 pm
I will do it tomorrow morning.
Title: Re: Maths & Physics Help
Post by: haziq91 on February 09, 2012, 03:30:00 pm
thank you very much but can u plz posted it b4 12pm as i have to hand it in at 2 pm
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 09, 2012, 09:09:27 pm
I noticed that.
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 10, 2012, 11:07:01 am
q3 needs software
Title: Re: Maths & Physics Help
Post by: haziq91 on February 10, 2012, 06:10:16 pm
thanks man...  it did help with some of the confusion that i had
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 12, 2012, 11:00:17 pm
No probs
Title: Re: Maths & Physics Help
Post by: astarmathsandphysics on February 12, 2012, 11:01:23 pm
I asked a coursework company how much they would charge to do it. They said £180.