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Leaving Cert 2012-13 *OFF-TOPIC* (hideaway) thread
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Out of curiosity how much pages do ye write for 30 marks Geography answers?
I know it is all about SRPs but just wondering what might be the average amount?
I usually end up with around 1 and a half pages to 2 anyways.
1 and a half or a bit less usually! How much should we write for the Biome question?0 -
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Eurovisionmad wrote: »Has anyone else done the central limit theorem for maths or are we the only school mad enough
It does sound vaguely familiar but I'm not entirely sure what it is :L Is it the yoke that has something to do with distributions and sample size and if n>30 or some other nonsense?
Can anyone enlighten me as to what the factor theorem is? I remember there was a question in one of the sample papers that got you to solve something "using the factor theorem or otherwise". Needless to say I haven't a clue what the factor theorem and my "otherwise" wasn't successful.0 -
Eurovisionmad wrote: »Has anyone else done the central limit theorem for maths or are we the only school mad enough
We covered it on the last day of school.
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Eurovisionmad wrote: »Has anyone else done the central limit theorem for maths or are we the only school mad enough
We covered it, but I can't remember what it is0 -
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Is the central limit theorem in the supplement book? If so that's not on our course.
The factor theorem is that a polynomial f(x) has a factor of (x-a) if f(a)=0. Something like that. It's in the algebra chapters I think.
On the subject of maths, has anyone done binomial theorem? I saw it in the complex numbers chapter as part of a question but I have never done it.. Anyone know what chapter it is even? The question was to prove the identity of sin 3theta.
Also finding it extremely difficult to study today, have done nothing!
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CookieMonster.x wrote: »Is the central limit theorem in the supplement book? If so that's not on our course.
The factor theorem is that a polynomial f(x) has a factor of (x-a) if f(a)=0. Something like that. It's in the algebra chapters I think.
On the subject of maths, has anyone done binomial theorem? I saw it in the complex numbers chapter as part of a question but I have never done it.. Anyone know what chapter it is even? The question was to prove the identity of sin 3theta.
Also finding it extremely difficult to study today, have done nothing!
AFAIK the binomial theorem's off the course for this yea or so my teacher tells us anyway. It hasn't come up in any of the sample papers either, I don't think soI'll be giving it a miss myself.
I've gone over the factor theorem God knows how many times and it just doesn't click with me. I can prove it cos' I just learned the proof off but if I'm asked to apply it like that one in the samples I'll be lost0 -
Eurovisionmad wrote: »Has anyone else done the central limit theorem for maths or are we the only school mad enough
Yep. But I'm not even ****ing sure if it's on the course0 -
CookieMonster.x wrote: »Is the central limit theorem in the supplement book? If so that's not on our course.
The factor theorem is that a polynomial f(x) has a factor of (x-a) if f(a)=0. Something like that. It's in the algebra chapters I think.
On the subject of maths, has anyone done binomial theorem? I saw it in the complex numbers chapter as part of a question but I have never done it.. Anyone know what chapter it is even? The question was to prove the identity of sin 3theta.
Also finding it extremely difficult to study today, have done nothing!
We didn't do the binomial theorem, our teacher says that's off the course, but she said she wasn't sure about the central limit theorem, and in fairness she's an excellent she'd really have her finger on the the pulse when it comes to math! She told us she went to a project maths in service and asked and the people running it said said they might give (what they phrase) "scaffolding" and that students may have to answer it, but she says they really weren't giving a straight answer, we just did in the very last few days of school.
On the wider topic itself its a total joke that we are exactly a week away from Maths paper 1 and we're not sure what is/isn't on the course, project maths in general has been a total joke, like there is something to be said for making the exam less predictable and improve students problem solving skills, but the manner it has been introduced has been a total disaster, late books, late exam papers, confusion about the syllabus, it was totally rushed, it should've been brought in in its totality for a group of 1st years, the idea of these transition syllabi is ridiculous!</rant>0 -
The last thing project maths has taught me is problem solving skills. If there's one thing it has taught me it is I now hate maths. It has become my biggest enemy over the past 2 years. And I used to love maths but my JC A means diddly-squat to me now.
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Can you post it there? I have no idea what you're on about
Also is binomial expansion like Bernoulli trials? I'm lost with all these proofs and stuff!
Yep you do! Although I think you do it for Bernoulli like the reverse of how it is in the tables. Or something utterly bizarre like that.0 -
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Can you post it there? I have no idea what you're on about
Also is binomial expansion like Bernoulli trials? I'm lost with all these proofs and stuff!
To prove:
If f(x) is a cubic expression and f(k)=0 then x - k is a factor of f(x).
Proof:
Let f(x)=ax^3 + bx^2 +cx +d.
Then f(k)=ak^3 + bk^2 + ck + d
f(x) - f(k)=ax^3 + bx^2 + cx +d -ak^3 - bk^2 - ck -d
= a(x^3 - k^3) + b(x^2 -k^2) + c(x - k)
= a(x - k)(x^2 + kx + k^2) + b(x - k)(x +k) + c(x - k)
=(x - k)(ax^2 +akx +ak^2 + bx + bk) + c
==> (x-k) is a factor of f(x) - f(k)
But f(k)=0
Therefore x-k is a factor of f(x)
Like I said, it probably isn't of any use in itself because I doubt they'll just ask you to prove it but I learnt it anyway one evening0 -
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