Leaving Certificate: Higher Level Maths Discussion

Shane15 · 06-06-2014 08:32PM

Days 298 wrote: »

Well no financial maths or polar form is a disgrace. Of course those who are going for As wont mind but it really didnt reward the B/C students and the effort we put into these areas.

Probably scrapped a B at worst a C1. Cant do anything now.

NEVER AGAIN

I dont care as long as I get my course at the end of the day. The record numbers will mean many weaker students so expect a nice surprise when opening your results

So lads papers out the window. This examiner has his own way.

I am one of those weaker students praying for a pass. That exam killed me.

Days 298 · 06-06-2014 08:35PM

Shane15 wrote: »

I am one of those weaker students praying for a pass. That exam killed me.

Dont worry. Theyll frontload the marks.

Everyone is in for a surprise Id say. The huge difference in the standard of the top and the bottom make it hard to set up a normal marking scheme.

eefah · 06-06-2014 08:36PM

So now the post-mortem-ing has died down, would anyone be willing to hazard a guess as to what'll come up on paper 2?

K6Y · 06-06-2014 08:43PM

eefah wrote: »

So now the post-mortem-ing has died down, would anyone be willing to hazard a guess as to what'll come up on paper 2?

Financial maths.

Shane15 · 06-06-2014 08:43PM

K6Y wrote: »

Financial maths.

LMAO. I'm still recovering from the shock. :pac:

Johnjoeboy · 06-06-2014 08:44PM

Can financial maths or some complex numbers come up on paper 2

Shane15 · 06-06-2014 08:45PM

Johnjoeboy wrote: »

Can financial maths or some complex numbers come up on paper 2

I don't think so unfortunately.

Johnjoeboy · 06-06-2014 08:47PM

I have feeling paper 2 will be nicer but will do the same as in paper 1.they will only test on a few chapters

Days 298 · 06-06-2014 08:47PM

Shane15 wrote: »

I don't think so unfortunately.

Well the snakes put in triangles today.

Maybe a complex number logged as one of the angles and the other angles are the conjugate root mean squared

aleatorio · 06-06-2014 08:50PM

As we discussed before paper 1, what are the things we need to know off for paper 2?

- Constructions
- The three proofs
What else?

aleatorio · 06-06-2014 08:51PM

If probability ends up a major feature of Paper 2 Im feckered lads...

Days 298 · 06-06-2014 08:52PM

" The angle on a badly built bridge is X degrees today. It collapses at a rate of 30% per yer.
Calculate the future value in 5 months time.

It turns out one of the structures is not rooted to the ground and can be represented by 12+2i.
Write in polar form... :P

K6Y · 06-06-2014 08:54PM

aleatorio wrote: »

As we discussed before paper 1, what are the things we need to know off for paper 2?

- Constructions
- The three proofs
What else?

Enlargements
How to calculate the correlation coefficent & standard deviation

Are you on about the theorems? I could've sworn there were a lot more than 3

Penguins123 · 06-06-2014 08:55PM

Expected Value???

aleatorio · 06-06-2014 08:58PM

K6Y wrote: »

Enlargements
How to calculate the correlation coefficent & standard deviation

Are you on about the theorems? I could've sworn there were a lot more than 3

Oh yeah thanks

We only need to have theorems for 3! :pac: For the rest we just need to be able to apply them to problems

booblefoop · 06-06-2014 09:18PM

Does anyone have a list of all the theorems we need to be able to apply for Paper 2? I don't see how people can manage to remember all of them!

millypop · 06-06-2014 09:19PM

aleatorio wrote: »

Oh yeah thanks

We only need to have theorems for 3! :pac: For the rest we just need to be able to apply them to problems

wat bout the trig proofs too!!!!!!

jimbob1255 · 06-06-2014 09:22PM

can someone explain to me how that aritmetic sequence today was arithemtic and not geometric??

aleatorio · 06-06-2014 09:26PM

jimbob1255 wrote: »

can someone explain to me how that aritmetic sequence today was arithemtic and not geometric??

lna^1 is lna
lna^2 is the same as 2lna which is lna+ lna
lna^3 is the same as 3lna which is lna+ lna+ lna

So thats arithmatic

millypop wrote: »

wat bout the trig proofs too!!!!!!

Im talking specifically about Geometry proofs, sorry should have specified

MegGustaa · 06-06-2014 09:26PM

jimbob1255 wrote: »

can someone explain to me how that aritmetic sequence today was arithemtic and not geometric??

Because by the laws of logs, ln(a^n) = n.lna

So T1 = lna, T2 = 2lna, T3 = 3lna...so the first difference is constant, it's lna

booblefoop · 06-06-2014 09:28PM

jimbob1255 wrote: »

can someone explain to me how that aritmetic sequence today was arithemtic and not geometric??

Because T(n+1) - T(n) was constant:

T(n+1) = ln(a^(n+1)) = (n+1)ln(a)
T(n) = ln(a^n) = (n)ln(a)

=> T(n+1) - T(n) = (n+1)ln(a) - (n)ln(a)
= lna
= constant, therefore arithmetic sequence

I think that's right anyway!

jimbob1255 · 06-06-2014 09:28PM

MegGustaa wrote: »

Because by the laws of logs, ln(a^n) = n.lna

So T1 = lna, T2 = 2lna, T3 = 3lna...so the first difference is constant, it's lna

god damn it... looks so easy looking back. but wats done is done thank you

XtotheZ · 06-06-2014 09:30PM

Statistics is a solid bet

robman60 · 06-06-2014 09:30PM

aleatorio wrote: »

lna^1 is lna
lna^2 is the same as 2lna which is lna+ lna
lna^3 is the same as 3lna which is lna+ lna+ lna

So thats arithmatic

Ugh, I know that rule but I completely overlooked it today. In hindsight I did horribly in Qs 5+6. I'd say I lost over half of the total marks I lost in those two questions.

EoghanIRL · 06-06-2014 09:39PM

XtotheZ wrote: »

Statistics is a solid bet

Id say it will be a full long question . Hopefully 75 marker .

Rbrtmry · 06-06-2014 09:54PM

EoghanIRL wrote: »

Id say it will be a full long question . Hopefully 75 marker .

Do 75 markers exist? or am i missing sarcasm

robman60 · 06-06-2014 09:54PM

EoghanIRL wrote: »

Id say it will be a full long question . Hopefully 75 marker .

I hope to God stats and probability are two long questions. Trig is fine too so if the long questions are mainly based on those I'd be thrilled.

Can anyone give any predictions for paper 2? Not as simple as just saying stats will feature, but precise things that we might have overlooked. I know I wouldn't have been able to work out the average value of a graph until I saw it on here.

I'm predicting a graph of sin or cos for Q5 with questions on the period and range.

Days 298 · 06-06-2014 09:55PM

robman60 wrote: »

I hope to God stats and probability are two long questions. Trig is fine too so if the long questions are mainly based on those I'd be thrilled.

Can anyone give any predictions for paper 2? Not as simple as just saying stats will feature, but precise things that we might have overlooked. I know I wouldn't have been able to work out the average value of a graph until I saw it on here.

I'm predicting a graph of sin or cos for Q5 with questions on the period and range.

After paper 1 today being nothing like predicted or expected. Trying to predict is useless.

LCMATHS · 06-06-2014 10:23PM

Wow after the work I put into maths this was just a huge shock to the system. I was able to answer all the questions on all the Edco papers, then this

sequence and series or whatever all that was all over the paper, the one topic I knew nothing about. Then Q9 a topic I hate as well, no glorious simultaneous equations, no rates of change, no polar form, no de moivre's theorem, no financial maths. Worst thing is everyone I talked to thought it was a great paper, i'm here in shock, wondering what i'm going to do when i fail maths now

Damn you SEC, why you deceive us. Hoping they give us a nice paper 2.

sarahkiely125 · 06-06-2014 10:25PM

I have no idea what's happening. I got a B3 in my maths mock. I literally failed that paper today. After getting 515 in my mocks its safe to say il be lucky to hit 400.

****Leaving Certificate: Higher Level Maths Discussion****

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Leaving Certificate: Higher Level Maths Discussion