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**Elizabete Balčus**

## you'll do fine!

in fact im sure you will do more than fine. you always do well : )

good luck! x x x

## gooooood luck!

## Thank ye both.

Luckily it's Sociology. And the easiest module of the 3.

Still:

:(

## Get off the internet and do some work.

:)

## I'll have you know

I am on a Sociology website!

## Ok

well good luck then.

## I've got maths higher tomorrow

Did a past paper and got 43/50

</smug>

## Nerd ^

## Smug nerd*

Is it wrong that I'm considering applying for medicine, a subject which I have have never had any interest in before, purely because I want to be like House?

## Absolutely not.

That's the best reason to do it ever!

## Pffschtzh

I got 100% in every single pure module at a-level first time.

## Good for you.

Cookie?

## How advanced is higher maths?

## dunno

differentiation, integration, logarithms, wave function, "further trig", vectors and all that jazz

## Also:

Whats the answer to this: A line of equation y=2x is tangent to a circle with centre (t,0) and radius 2 units. Find the value of t.

I imagine you need to sub the equation of the line into the equation of the circle, then use the discriminant(b^2-4ac=0) to work out "t", but all these letters are confusing me.

## ..

That's right, if you sub the line equation into the circle equation, you get a quadratic equation for t. You just need to use b=2t, a=5, c=t^2-4.

## but what happens to the Xs?

Isnt the equation after subbing in the line

(X-t)^2+Y^2=4

which gives

5X^2+t^2-2tx-4=0

where from there?

## ..

Compare it with ax^2 + bx + c = 0 to get the coefficients a,b,c, plug them into the discriminant.

## Ah of course

cheers =)

## (the answer's root 5, fact fans)

## ..

Or -root5. That's how they catch you out.

## oh of course

± root 5

Though in the question theres a diagram and the point (t,0) is in the positive direction of the x axis, so I dunno.

## ..

That's no excuse, unless it explicitly says either the solution is positive, or there's only one solution.

## Surely if the equation of the line

is y=2x the circle must be in the positive direction of the x axis?

## ..

No. It seems fairly obvious to me that there are at least two solutions, although the second one is not necessarily negative.

Frankly, the setup just seems to be a fancy way of saying "solve these simultaneous equations" - just remember that it's maths, not physics, so there are no unphysical solutions, and not giving one of them is a good way to drop an easy point.

## Woah

I have no idea how that works. how can a line perpendicular to y = 2x not pass through the x axis in the positive direction? far out.

## ..

I was wrong because I was forgetting the the circle has radius 2. That'll learn you for listening to me.

I stand by my point that it's worth stating that there are two solutions, though.

## yeah ill remember for tomorrow

thanks

## ..

If you care any more, here's a diagram.

http://i189.photobucket.com/albums/z134/determinist/answer-1.jpg

## :(

I am completely failing this exam tomorrow. I am ridiculously upset right now.

## about as advanced

as your face!

## *kicks you in your face!*

I am really worried about this damn exam but I just can't study. I don't remember anything, even though I spend half my time studying for it!

## Good luck!

I have my first tomorrow as well. Sociology - Methods. Easy, but I don't really want to do it.

## AQA?

I don't like that board. They don't post out results.

## Yep.

I like them. They post the mark schemes on their website from previous exams. Really helpful.

## Yeah that's good...

here:

http://www.chrisgardner.clara.net/sls1/tests/mthtstmen.htm

Very helpful.

## Thanks!

To be honest I'm alot more worried about the Poverty paper. I can't remember anything of what we've been taught. :s

## I didn't do poverty,

I did Education, and Family And Households.

## My first A2 is

One june 11th

I got my history coursework back today and had full marks and now feel worryingly complacent :(

## Someone

recommend me something to listen to, on the bus to school.

Something calming probably, but yeah:

GO!

## Listen to the soundtrack to 8 Mile.

And have a rap battle during the exam.

## :D

## Matta fact, dogg

Here's a pencil

Go home, write some shit, make it suspenseful...

What an ingenious rhyme.