***2015 LC Maths Paper 1 - Higher Level - June 5th***

DarraghF197

Kremin wrote: »

I just wrote what you have to do to get from -x-5 or whatever to the point of inflextion and then added it to the point of inflection, we never did that... so hopefully a few attempt marks.

Yeah I added their co-ordinates. Looked at it and was like, nope! That's wrong!

sdio wrote: »

Anyone else get (x,y) for the image?

Someone said to me after it that's what they got. I'd say that's the likely answer.

Magnate

Exam paper's up on examinations.ie, I'm tempted to have a look at the ordinary level one because it was supposedly quite difficult.

Edit: Nevermind, a walk in the park compared to today's.

Kremin

DarraghF197 wrote: »

Looks like 299/300 for you!

Are there gold medals awarded for maths for a flawless result or is that just Applied Maths and Accounting?

Hahha I'd say I'll lose 3 for a numerical slip at the end or something... really 300 was an over estimation, I'm guessing I got around 290 or 285... Still, only need 250 in paper 2 for an A1 which is all I really want.

Kremin

DarraghF197 wrote: »

Someone said to me after it that's what they got. I'd say that's the likely answer.

that's what I got!!

sdio

Did anyone else find the financial question part (b) hard? I used the amortisation formula with P = 80280 and t = 120.

Kremin

sdio wrote: »

Did anyone else find the financial question part (b) hard? I used the amortisation formula with P = 80280 and t = 120.

Why P=80280? Was it not 80,000?

NLPcrunchy

Kremin wrote: »

Why P=80280? Was it not 80,000?

Payments didn't start until one month after?

sdio

Kremin wrote: »

Why P=80280? Was it not 80,000?

Well I thought because he only starts paying 1 month after he gets the loan.

DarraghF197

That's an assumption regarding the amortisation formula, that it does start one month/year after.

MmmPancakes

DarraghF197 wrote: »

That's an assumption regarding the amortisation formula, that it does start one month/year after.

So 818 is the right answer?

AlfaJack

I'm actually so relieved by the paper today! I'd absolutely love to get an A1 so fingers crossed!
I just hope paper two is as nice as today's paper

dazzadazza

MmmPancakes wrote: »

Here is my solution: http://prntscr.com/7dhn6y

Let me know if I messed up

I got the same answer as you but my decimal place was one place to the right. Whichever one of us got it wrong will lose 1 maybe 3 marks I reckon.

Kremin

dazzadazza wrote: »

I got the same answer as you but my decimal place was one place to the right. Whichever one of us got it wrong will lose 1 maybe 3 marks I reckon.

His is right, I think yours is in millimeters, did you convert 1mm to 1/10cm?

DarraghF197

MmmPancakes wrote: »

So 818 is the right answer?

IIRC, yes. There's nothing tricky in the question, just 80000 into the formula.

Kremin

Full question 8

dazzadazza

Kremin wrote: »

His is right, I think yours is in millimeters, did you convert 1mm to 1/10cm?

Yeah I converted and used 0.1, I probably did something else wrong.

sdio

DarraghF197 wrote: »

That's an assumption regarding the amortisation formula, that it does start one month/year after.

I knew I was overthinking it! Thanks.

fin709

Damn, i put 119 in the amortisation formula thinking that he payed one month after. How many marks am i likely to lose?

Help1997

Grey Wind wrote: »

I got 35 and 36.

I got that aswell

Kremin

my reasoning for why S=0

Frigating

Ah, sugar. Had 50m as 50000cm instead of 5000.

Could anyone else not get 4a? I multiplied by the conjugate about 3 times, ended up with decimals.

tehelitenoob

cathalio11 wrote: »

Someone please explain.

I got something like 12 or 14 for this answer.

Yes I used the convergin infinte series formula and I got 14

theRB

Is anyone confident of their answer for the last part of the oil spill question? I think i got something like 1,609 or something huge like that. Pretty sure it's wrong but I wonder how you were meant to do it?

Kremin

theRB wrote: »

Is anyone confident of their answer for the last part of the oil spill question? I think i got something like 1,609 or something huge like that. Pretty sure it's wrong but I wonder how you were meant to do it?

http://i.imgur.com/U1CMjhq.jpg

It should be a big answer, if you think about it, it is the increasing per minute in CENTIMETERS, when the circle is already 50 metres in radius.

DarraghF197

Kremin wrote: »

my reasoning for why S=0

Found a piece of paper and briskly did it out comparing it to another summation.

This explains why I think the 'n' in the sum formula is n, rather than n-1

Thus, I let a equal 1, and r equal w and got -1/w

gjc

New to this section of boards where can I get an online version of this years paper ?? Would it be up already ? Many thanks !

Aoife37

Hi can somebody help with question 5? My turning point was something like (-23/4, -25/4)
Also what were the answers people got for the first few sections of question 9? Thanks

fin709

This might sound easy but what was the answer to the length of the day in question 9? the very first part can anyone remember?

is mise spartacus

It was so so so so so hard

Kremin

Aoife37 wrote: »

Hi can somebody help with question 5? My turning point was something like (-23/4, -25/4)
Also what were the answers people got for the first few sections of question 9? Thanks

Yeah I got that too.