SOLUTIONS Maths HL Paper 1

RedTexan · 09-06-2012 11:18am

K_1 wrote: »

Great. Only problem now is a made an absolutely retarded mistake in the b part of that q, so there goes my a1

It really all depends on the marking scheme, I got four full questions and only missed q1 (c)(ii) and q6 (c)(iii), now banking I won't be punished too badly. It's all relative though, paper 2 should be interesting

porsche924 · 09-06-2012 1:18pm

Could someone please post the solutions for question 3 and 5???

xCiara_Jonas · 09-06-2012 3:16pm

Thanks so much for this!
For question 8 (c) (ii) I didn't get that answer but what I did was integrate under the curve between root k and -root k would that still work? If it does I think I may have just made a slip cause I took away the areas under the lines...

finality · 09-06-2012 3:20pm

xCiara_Jonas wrote: »

Thanks so much for this!
For question 8 (c) (ii) I didn't get that answer but what I did was integrate under the curve between root k and -root k would that still work? If it does I think I may have just made a slip cause I took away the areas under the lines...

That's completely right. The answer given is wrong, it should be (2rootk^3)/3 I think.

xCiara_Jonas · 09-06-2012 3:41pm

finality wrote: »

That's completely right. The answer given is wrong, it should be (2rootk)/3 I think.

Really?!!

I got 2rootk^3 :L Maybe a slip...

Hayezer · 09-06-2012 3:58pm

Question 1 C)i

Can you multiply kx-t by (k^2x^2+k) (k just being random letter), let it equal to the equation they give you and match up? I did and I got two things equal to each other, does this show it's a factor

? Feel like a r*tard that I din't just long divide

:mad:

paddyhes · 09-06-2012 4:01pm

are there solutions to Q3 and Q5 up?

finality · 09-06-2012 4:39pm

xCiara_Jonas wrote: »

Really?!! I got 2rootk^3 :L Maybe a slip...

No that's right, sorry, that was a typo :P

xCiara_Jonas · 09-06-2012 5:07pm

finality wrote: »

No that's right, sorry, that was a typo :P

Think it's supposed to be 2rootk^3 all divided by 3 :L But still! Prob only lost either 1 or 3 marks x)

finality · 09-06-2012 5:18pm

xCiara_Jonas wrote: »

Think it's supposed to be 2rootk^3 all divided by 3 :L But still! Prob only lost either 1 or 3 marks x)

Oh, you didn't have it over 3? When you integrated the curve, and raised the power to 3, did you forget to put it over 3? That'd just be a blunder

xCiara_Jonas · 09-06-2012 5:31pm

finality wrote: »

Oh, you didn't have it over 3? When you integrated the curve, and raised the power to 3, did you forget to put it over 3? That'd just be a blunder

I don't have a clue what I did, but I def integrated it proper.. hmmm
Could have come from the previous part cause I went and said a = root-k so could have stemmed from some workings on that maybe, which if it did I wouldn't actually lose the marks for that part of the question just (i)

porsche924 · 09-06-2012 6:06pm

Does anyone know where I can find the solutions to questions 3 and 5???

porsche924 · 10-06-2012 11:21pm

Maybe_Memories wrote: »

Solutions to 1,2,6,7,8. The rest coming tomorrow.

**Disclaimer: I'm not a maths teacher or in any way involved in the marking. I'm simply going into 3rd year maths at Trinity College, in my LC got A2 in maths and physics and A1 in Applied maths. There may possibly be mistakes in my solutions. I'm not a machine. If you spot something, please say so.
They will not appear on your screen and you will have to click a link to view/download them, so no one is forcing to to view them. You do so at your own discretion.

Could you please post the solutions to question 3 and 5 from higher paper 1???