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

..somebody please just kill me now..

aleatorio wrote: »

Omg I was the same! So I just subtracted the other two eqns from the total and wrote it beside it with some bull****ted workings to make it look like I had a method :pac:

Haha thats exactly what I did!

At this point I'm just hoping I can somehow pass.

Aspiring wrote: »

Think my average value was 12 :pac:

Oh well, attempt marks

Living off them at the moment. They're my only hope.

Shane15 wrote: »

At this point I'm just hoping I can somehow pass.

For me to pass, I need to get 80% in paper 2......paper 1 just went completely out the window for me.

Aspiring wrote: »

Think my average value was 12 :pac:

Oh well, attempt marks

Mine was 1 which looked quite miserable.. Oh God, attempt marks indeed!!

Was A 100? As in that was the temperature of the water initially and then it decreased after it multiplied into the exponential equation with the negative k value in the power?

robman60 wrote: »

I thought it was pretty hard really. I did well enough overall but I had to think about almost every question before getting an answer. Even then I think I got a bunch of them wrong.

For the sequence with lna^n, were the first two parts not asking the exact same thing? What did you guys do?

I did the exact same thing, as they were both part of part a im assuming for (i) all they wanted you to do was write t1, t2 and t3.

robman60 wrote: »

I thought it was pretty hard really. I did well enough overall but I had to think about almost every question before getting an answer. Even then I think I got a bunch of them wrong.

For the sequence with lna^n, were the first two parts not asking the exact same thing? What did you guys do?

Yeah, for the first part I just showed it was a series like visually, but then in the second part I did T2-T1 and T3-T2 to show it was a constant :P

The last part of that question was hard though, I made it as far as getting that 100d was equal to S20 and it was downhill from there XD

aleatorio wrote: »

Sweet mother divine that was a beautiful paper holy crap
Everything I loved came up, with the exception of Q3 induction, which I knew the first part for and had a vague idea of the other two parts XD

Few things to run by ye:

a in the log arithmetic sequence was e^2 or 7.4

Average value was -8

Yes, and yeah, I got 8, same thing like.

aleatorio wrote: »

Area under the bridge thingy was 239? (Very iffy about that one)

And for the last q on why the value will always increase, was it because e^kt has no limit?

It couldn't be 239: 5x48 is 240, it had to be a fair bit less than that if you think about it.

I got 194, others got like 193.

As for the constant increase, I got the second derivative and said it was always positive. Let the corrector be generous please :pac:

robman60 wrote: »

I got 3 as well! I was sure it was right having just learned it recently but there doesn't seem to be much agreement!

Well I can kind of remember getting [9-9-24] when I subbed in the x value during integration, and then it was 1/3 times that so that's how I got -8

eefah wrote: »

I got 80.33?
But first I got it in terms of k, and then when I found out k, I went back and worked it out.

It took me about 5 minutes alone, but A was 77 because the t value is 0 at that time which got rid ok the k which meant that A was just 77!

BlueWolf16 wrote: »

what did you guys get for the equation of the even( or odd) numbers ? It was part 3 is some question, I think q3, under the induction one..

I just said n(n+1)/2 - n^2+n, and got something that is completely wrong.. will they accept just 2n-1 ?

I knew n^2 was the sum of the odd numbers but kind of waffled a proof cos I wasn't sure WHY XD

NO FINANCIAL MATHS, PRAISE JESUS