!! HL Maths 2015 - predictions, guesses, Q & A, discussion ...

Cr4pSnip3r

BlueWolf16 wrote: »

So anyone found out about that whole - attempting the questions numerous times? Like doing it once, then drawing a line under, and doing it again differently? If it's true, jesus the way I'm going to abuse that system.

I did every question like three times on the JC Paper I. Obviously got it on the last one, got an A :P

BlueWolf16

Cr4pSnip3r wrote: »

I did every question like three times on the JC Paper I. Obviously got it on the last one, got an A :P

I mean that's such a nice thing, but it seems so little people know it.. Our teacher never even mentioned this, but why?? That's like having a book open during your english exam, if I knew that earlier I would have done so much better..

Will know to move on quickly now so that I can attempt more questions, I usually have time left over anyways.

aunt aggie

BlueWolf16 wrote: »

So anyone found out about that whole - attempting the questions numerous times? Like doing it once, then drawing a line under, and doing it again differently? If it's true, jesus the way I'm going to abuse that system.

Haven't marked for the SEC yet but I know GCSE and A Level mark schemes give marks for correct answer, no matter the number of attempts, as long as one answer doesn't contradict another. Even then you can get attempt marks up to the contradiction. I've been told that SEC may be similar but haven't seen it myself yet.

Never cross out any answer in case. If you have time to look over the paper and redo questions, then you can do that. Most people wont have time to try the same question a number of times.

BlueWolf16

aunt aggie wrote: »

Haven't marked for the SEC yet but I know GCSE and A Level mark schemes give marks for correct answer, no matter the number of attempts, as long as one answer doesn't contradict another. Even then you can get attempt marks up to the contradiction. I've been told that SEC may be similar but haven't see it myself yet.

Never cross out any answer in case. If you have time to look over the paper and redo questions, then you can do that. Most people wont have time to try the same question a number of times.

A bit random, but how is Leaving Cert Maths compared to A level maths? I'm going to UK to study Computer Science, and it seems that A-Level is more advanced right? Like a B in A-levels, is an A in leaving cert..

aunt aggie

BlueWolf16 wrote: »

A bit random, but how is Leaving Cert Maths compared to A level maths? I'm going to UK to study Computer Science, and it seems that A-Level is more advanced right? Like a B in A-levels, is an A in leaving cert..

A Level students are more specialised. They only study 3 or 4. So A Level Maths covers more material as they have more class time for Maths. Students study core modules and can choose between further modules in Mechanics or Statistics or Decision. That doesn't make students more advanced, they're just examined on more material.

There isn't much Maths related to Computer Sciences on either course, so you could be on a similar level to other students next year.

pa limerick

Does anyone think any proofs will come up tomorrow?

BlueWolf16

pa limerick wrote: »

Does anyone think any proofs will come up tomorrow?

Hopefully a nice proof by induction, then something about root 2 or root 3 proof by contradiction.

By the way, what is everyone doing on timing? I take it's around 10 minutes per Sq, then 30 minutes for each long question?

DarraghF197

BlueWolf16 wrote: »

By the way, what is everyone doing on timing? I take it's around 10 minutes per Sq, then 30 minutes for each long question?

I've never timed myself with maths. Only English I do it, today I was on the brink! Probably do it as quickly as possible and leave early and watch some tv

Maybe not... Just so excited for the weekend, so much on in terms of sport!

simon360

Getting kind of worried here today, have geography tomorrow and did that for 2 hours there, now I'm wrecked and no maths is going in. Worrying about failing, got 40% in the ridiculously hard mock (can't remember think it was the DEB one) and then 56% in another one, should I be grand? Is the attempt marking really as lenient as everyone makes it out to be?

The_Mac

simon360 wrote: »

Getting kind of worried here today, have geography tomorrow and did that for 2 hours there, now I'm wrecked and no maths is going in. Worrying about failing, got 40% in the ridiculously hard mock (can't remember think it was the DEB one) and then 56% in another one, should I be grand? Is the attempt marking really as lenient as everyone makes it out to be?

You've still got a bit of time between both exams, and if you did the DEB I'd say you'll be fine.

oneillsk

Iv done all the exam papers in the edco papers. Does anyone know where I can source some papers for free online? I want to get some fresh questions before the exam tomorrow.

DaveMc90

Can someone please explain this multiple attempts thing? Like do you do your extra attempts on sheets and add them to your booklet ?

is mise spartacus

I think I might drop to OL tomorrow... got 57% at christmas on just paper 2
mocks i had the DeB one and got 25% which was increased to 30%
I have no confidence.... help

BlueWolf16

simon360 wrote: »

Getting kind of worried here today, have geography tomorrow and did that for 2 hours there, now I'm wrecked and no maths is going in. Worrying about failing, got 40% in the ridiculously hard mock (can't remember think it was the DEB one) and then 56% in another one, should I be grand? Is the attempt marking really as lenient as everyone makes it out to be?

yeah man, don't worry. Just try to make some attempt at every question. attempt marks are very nice, I think you can actually even get a C in it with just somewhat correct attempts throughout the paper. That mocks paper was a tragedy, it shouldn't be anywhere near as hard as it.

Broseph

Whats binomial expansion? Is that tomorrow or monday? P1 or 2?

BlueWolf16

DaveMc90 wrote: »

Can someone please explain this multiple attempts thing? Like do you do your extra attempts on sheets and add them to your booklet ?

From Revise Wise book -

"If you cannot finish part of a question, leave a space and come back to it later. Never scribble out any work or use Tipp-Ex. Put a single line through it so that the examiner can still read it. In many cases, work that had a line through it received more marks. "

Basically you can do a single question many times, just instead of scribbling it out, draw a huge line under it, and do it again from scratch.

The_Mac

Broseph wrote: »

Whats binomial expansion? Is that tomorrow or monday? P1 or 2?

Tomorrow.

DarraghF197

is mise spartacus wrote: »

I think I might drop to OL tomorrow... got 57% at christmas on just paper 2
mocks i had the DeB one and got 25% which was increased to 30%
I have no confidence.... help

If you're counting maths for points, I think you should stick to higher level. I think there's a five percent leniency if you go below 40%, so it's very unlikely you'll fail or anything.

On a school near us, only two people managed to pass that Deb exam! That thirty percent is close to the pass mark anyways, and you will do a lot better than that.

The most important ingredient to success in maths is your belief system. A week ago nothing was working out for me. It wasn't because I wasn't capable, it was because I didn't believe I was able to do it. You need to have the confidence to be able to do the questions!

If you're not counting it for points, then there's probably no harm in dropping it. But that elusive 25 points can make a massive difference. Those results tell me you'll easily do better than dropping down to Ordinary level. Just getting a D3 will match the maximum points you can get in OL.

Attempt everything, believe in every question! And you'll easily do better than dropping

Broseph

The_Mac wrote: »

Tomorrow.

Isnt it finding probability though?

Blue giant

is mise spartacus wrote: »

I think I might drop to OL tomorrow... got 57% at christmas on just paper 2
mocks i had the DeB one and got 25% which was increased to 30%
I have no confidence.... help

57% is not that bad. That's a C2 I think. It's likely that you have improved from the mocks as well. I'm sure you have more study and practice done than for the mocks. Does the course you want to do next year require a pass in maths? I think some arts and other courses don't. Did you check if the college has a special maths exam for those who failed maths? I know some do. I'm not exactly sure how they work though. It might not be a great idea to drop down tomorrow as you probably don't have many if any ordinary level exam papers done. Ultimately it's down to you though.

RoRo979

binomial can be tomorrow, easy enough though whatever the power e.g power of 4 = (4C0)........(4C4) then the second term goes down e.g 2x = (4C0)(2x)^5............(2x^0)(4C4) then third term goes up e.g 6y (4C0)(2x)^5(6y)^0.............(4C4)(2x)^0(6y)^5

Kremin

Broseph wrote: »

Whats binomial expansion? Is that tomorrow or monday? P1 or 2?

The formula is in the tables book, if that confuses you just remember pascals triangle.. which is
1
11
121
1331
14641 etc

Say you had (x+y)^3
Doing it manually would take a bit of work but, we can do it a quicker way... just go 4 lines down (the power + 1, as the first line is just a single term)
That means we get the line 1331.
Write this out with a bit of space
1 3 3 1

as it's ^3, the highest power will be 3 so start with x
1x^3+3x^2y+3xy^2+y^3

Decrease the power of X by one and increase the power of Y by one every term you move across. To check if the powers are right just add them, both powers added should always give 3...

Anyway the formula is page 20 of the tables book, its a bit difficult to type so just have a look.

MmmPancakes

Can't wrap my head around how to identify when to use the geometric sum of P(blah) or F/(blah)

Kremin

Cr4pSnip3r wrote: »

Said this in a separate thread but can anyone give me a list of topics and proofs, theroems etc. for Paper I? No clue

Proof by induction.
Proof of DeMoivres theorem by induction.
Differentiation by first principles (not really a proof but you need to follow a step by step system)
You need to be able to deduce the formula for amortisation, not sure if you have to prove it..

I'm not sure if theres any other ones?

Magnate

Kremin wrote: »

Proof by induction.
Proof of DeMoivres theorem by induction.
Differentiation by first principles (not really a proof but you need to follow a step by step system)
You need to be able to deduce the formula for amortisation, not sure if you have to prove it..

I'm not sure if theres any other ones?

Proof by contradiction too I'd say. Prove root 2 is irrational is handy enough.

is mise spartacus

Blue giant wrote: »

57% is not that bad. That's a C2 I think. It's likely that you have improved from the mocks as well. I'm sure you have more study and practice done than for the mocks. Does the course you want to do next year require a pass in maths? I think some arts and other courses don't. Did you check if the college has a special maths exam for those who failed maths? I know some do. I'm not exactly sure how they work though. It might not be a great idea to drop down tomorrow as you probably don't have many if any ordinary level exam papers done. Ultimately it's down to you though.

AFAIK ucc does not offer a special maths exam. My course does not require HL maths but I need it for those 25 extra points

Cr4pSnip3r

Kremin wrote: »

Proof by induction.
Proof of DeMoivres theorem by induction.
Differentiation by first principles (not really a proof but you need to follow a step by step system)
You need to be able to deduce the formula for amortisation, not sure if you have to prove it..

I'm not sure if theres any other ones?

Much thanks

Broseph

Kremin wrote: »

The formula is in the tables book, if that confuses you just remember pascals triangle.. which is
1
11
121
1331
14641 etc

Say you had (x+y)^3
Doing it manually would take a bit of work but, we can do it a quicker way... just go 4 lines down (the power + 1, as the first line is just a single term)
That means we get the line 1331.
Write this out with a bit of space
1 3 3 1

as it's ^3, the highest power will be 3 so start with x
1x^3+3x^2y+3xy^2+y^3

Decrease the power of X by one and increase the power of Y by one every term you move across. To check if the powers are right just add them, both powers added should always give 3...

Anyway the formula is page 20 of the tables book, its a bit difficult to type so just have a look.

Thanks for that theres another one too though where you use probability choosing P2 prob

sdio

Kremin wrote: »

Proof by induction.
Proof of DeMoivres theorem by induction.
Differentiation by first principles (not really a proof but you need to follow a step by step system)
You need to be able to deduce the formula for amortisation, not sure if you have to prove it..

I'm not sure if theres any other ones?

Also sum to infinity for a geometric series

Magnate

Broseph wrote: »

Thanks for that theres another one too though where you use probability choosing P2 prob

You're thinking of binomial distribution, that's slightly different.