Maths Question

the_brainaic · 14 May 2006 at 18:00

Oh, and to the guy doing Ad. Maths - It's not too bad. Learn the sine, quadratic and cosine rules off by heart cause you don't get a forumla sheet for it.

spirit · 14 May 2006 at 18:01

DaveyD said:
The formula is was certainly tought to me at GCSE level, I'm sure of it.

fair enough just checked the books, it is there.

Perhaps this shows the failings of our educational sytem?

Anyhow, like i said, just cause he doenst know something, doesnt mean he should be shot for asking for help - not exactly a nurtuing environment now is it.

SideWinder · 14 May 2006 at 18:02

the_brainaic said:
Oh, and to the guy doing Ad. Maths - It's not too bad. Learn the sine, quadratic and cosine rules off by heart cause you don't get a forumla sheet for it.

Sohcahtoa...wait, isn't that something to do with triangles.

spirit · 14 May 2006 at 18:03

SideWinder said:
Sohcahtoa...wait, isn't that something to do with triangles.

i think he meant the stuff like

sina/a = sinb/b = sinc/c

and a2 = b2 + c2 - 2bccosa

something like that, never actually used those htings EVER.

Etaqua · 14 May 2006 at 18:06

Soh cah toa is used for the sine, cosine and tangent formula triangles.

Sin theta = opposite/hypotenuse, cos theta = adjascent/hypotenuse, tan theta = opposite/adjascent.

It's different to the sine and cosine rules, which require different numbers to be plugged in, and they are totally different to soh cah toa formula triangles.

the_brainaic · 14 May 2006 at 18:07

Yeah I mean those! I remember a lot of questions involving the cosine equation - so make sure you can get it right both ways - working out the length of a side with the other two lengths and angle in between, and working out an angle when you have all the side lengths.

Inquisitor · 14 May 2006 at 18:09

spirit said:
fair enough just checked the books, it is there.

Perhaps this shows the failings of our educational sytem?

How is that a failing of our educational system? :confused:

It's not difficult to grasp...

Mr Spew · 14 May 2006 at 18:10

spirit said:
fair enough just checked the books, it is there.

Perhaps this shows the failings of our educational sytem?

Anyhow, like i said, just cause he doenst know something, doesnt mean he should be shot for asking for help - not exactly a nurtuing environment now is it.

What rubbish, I did my GCSEs five or six years ago, I don't remember any of the stuff I did then - does that mean the education system is failing? No - I simply don't need any of the stuff I was taught anymore.

spirit · 14 May 2006 at 18:11

Etaqua said:
It's different to the sine and cosine rules, which require different numbers to be plugged in, and they are totally different to soh cah toa formula triangles.

those require numbers to be subbed in too?

or perhaps he meant

sinx = x - x^3/3! +x^5/5! - .. + (-1)^r x^(2r+1) / (2r+1)!

cosx = 1 - x^2/2! + x^4/4! - ... + (-1)^r x^2r / 2r!

something like that anyway..
thank god all this stuff is in the formula book at a2, id have so failed otherwise cause i could never be bothered to learn formulas lol

spirit · 14 May 2006 at 18:14

Mr Spew said:
What rubbish, I did my GCSEs five or six years ago, I don't remember any of the stuff I did then - does that mean the education system is failing? No - I simply don't need any of the stuff I was taught anymore.

which could be a failure, in a sense, of the educational system. taught superfluous & irrelevant knowledge

and i meant that he wasnt taught that/did lower gcse/whatever

it wouldnt be a failure of the system, if you forget something... ?

Mr. Brightside · 14 May 2006 at 18:17

the_brainaic said:
Oh, and to the guy doing Ad. Maths - It's not too bad. Learn the sine, quadratic and cosine rules off by heart cause you don't get a forumla sheet for it.

Hate writing out anything related to maths on computers, readability goes down the drain.

But yeah I know the quad formula, sine and cosine rules

.

It's things like kinematics which get me. But my real problem is time. I always have been slow in exame, often don't finish and nearly always am working to the last minute. So with only the hour and a quarter I was really rushing (despite knowing we weren't expected to finish). And rushing = mistakes (little things like confusing positives/negatives).

Mr Spew · 14 May 2006 at 18:19

spirit said:
which could be a failure, in a sense, of the educational system. taught superfluous & irrelevant knowledge
and i meant that he wasnt taught that/did lower gcse/whatever

it wouldnt be a failure of the system, if you forget something... ?

Eh? It's not irrelevant knowledge, just knowledge that I personally do not need anymore. He might have been taught that, just doesn't remember it.

How is it a failure of the system? If anything, it's a failure of my memory.

spirit · 14 May 2006 at 18:20

null said:
Hate writing out anything related to maths on computers, readability goes down the drain.

But yeah I know the quad formula, sine and cosine rules .

It's things like kinematics which get me. But my real problem is time. I always have been slow in exame, often don't finish and nearly always am working to the last minute. So with only the hour and a quarter I was really rushing (despite knowing we weren't expected to finish). And rushing = mistakes (little things like confusing positives/negatives).

isnt the gcse like 3hours long? anyway, the old adage practice makes perfect is apt here

p4radox · 14 May 2006 at 18:23

Chill out guys. He's obviously just forgotten how to solve quadratics. It's not going to ruin his life or anything! Incorrect grammar on the other hand...
MuvverRussia actually rounded one of his solutions to x incorrectly, but no-one's spotted that yet.

spirit · 14 May 2006 at 18:24

Mr Spew said:
Eh? It's not irrelevant knowledge, just knowledge that I personally do not need anymore. He might have been taught that, just doesn't remember it.

How is it a failure of the system? If anything, it's a failure of my memory.

did you not read the last line of my sentence?

He may/may not have been taught it, the issue isnt at debate here. The point was not to make him feel like an idiot for something that he didnt know, regardless how simple it is.

Mr Spew · 14 May 2006 at 18:25

spirit said:
did you not read the last line of my sentence?

He may/may not have been taught it, the issue isnt at debate here. The point was not to make him feel like an idiot for something that he didnt know, regardless how simple it is.

Your writing is so confusing I didn't know what to make of it.

Of course it is at debate, you're debating it!

Mr. Brightside · 14 May 2006 at 18:30

spirit said:
isnt the gcse like 3hours long? anyway, the old adage practice makes perfect is apt here

GCSE Calculator and Non-Calculator are 2 hours, Additional Maths (not a GCSE) is also 2 hours

spirit · 14 May 2006 at 18:31

Mr Spew said:
Your writing is so confusing I didn't know what to make of it.

Of course it is at debate, you're debating it!

I'm sorry you feel that way, perhaps its cause im writing whilst watching a few films

spirit · 14 May 2006 at 18:32

null said:
GCSE Calculator and Non-Calculator are 2 hours, Additional Maths (not a GCSE) is also 2 hours

What is this Additional Maths?

When i did it, it was just noncalc & calc with differnet levels like higher etc

Mr. Brightside · 14 May 2006 at 18:37

An extra thing that the top set do at my school. It's not related to GCSE at all afaik.