• Best of luck to the class of 2024 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page
MedVision ad

General Thoughts: Mathematics Extension 1 (1 Viewer)

Killerb47

Member
Joined
Feb 17, 2013
Messages
43
Gender
Male
HSC
2013
Yah! i got like 20.68s from integrating the dV/dt equation and subbing in 'r' -> which i think was a constant in the formula
R was not constant. It's rate of decrease was constant, but r was gradually decreasing. So the answer was 62 seconds.
 

lulwut

New Member
Joined
Aug 7, 2013
Messages
22
Gender
Male
HSC
2013
Yeah im starting to think its wrong --> people are getting around 60s with a different method --> maybe it was the assumption that r was a constant was wrong =/
I found r when the volume was 10^-6 by subbing it into the V formula and rearranging, and then i subbed that value into the integration of dr/dt (once i had found the constant) and rearranged to get the time.

I'm not 100% that that's what i did, but looking at it right now, that's what i'm assuming i did...
 

jack12456

New Member
Joined
Mar 13, 2012
Messages
11
Gender
Male
HSC
N/A
Hi guys, for the further graphs question, i drew it in pencil. Apparently though when they scan it, it doesn't pick up on pencil, at least thats what my friend told me. Is this correct cos i'm really worried now. Should i send an email to bored of studies?
I've always drawn graphs in pencil :/
 

Web Addict

Member
Joined
Oct 19, 2012
Messages
462
Gender
Male
HSC
2013
Hi guys, for the further graphs question, i drew it in pencil. Apparently though when they scan it, it doesn't pick up on pencil, at least thats what my friend told me. Is this correct cos i'm really worried now. Should i send an email to bored of studies?
I've always drawn graphs in pencil :/
Crap. I have the same issue.
 

superSAIyan2

Member
Joined
Apr 18, 2012
Messages
320
Gender
Male
HSC
2013
the paper was pretty fun and new. it seemed harder than others.

think i got 1mcq wrong, and i cant remember if i wrote n or 2n on top of the sigma sign in 14b)iii). I'm quite sure i wrote n thoughÍ
 

kimjuliana

Member
Joined
Sep 8, 2011
Messages
134
Location
Sydney
Gender
Female
HSC
2013
Hi guys, for the further graphs question, i drew it in pencil. Apparently though when they scan it, it doesn't pick up on pencil, at least thats what my friend told me. Is this correct cos i'm really worried now. Should i send an email to bored of studies?
I've always drawn graphs in pencil :/
It's alright. I asked my teacher that this morning. He said it does scan, just as long as the drawing was dark enough. Plus I'm sure they will be able to see it. :)
 

obliviousninja

(╯°□°)╯━︵ ┻━┻ - - - -
Joined
Apr 7, 2012
Messages
6,624
Location
Sydney Girls
Gender
Female
HSC
2013
Uni Grad
2017
I probs rawed 55-57/70

The projectile was fun. Paper was fairly easy, was expecting harder, or was it just my 4u mindset.
 

Recondit

ヽ(" `Д´)ノ
Joined
May 3, 2012
Messages
400
Gender
Male
HSC
2013
MC: 9
Q11: 13-14
Q12: 13
Q13: 9-10
Q14: 8-10

52-56... Should've done better but I guess was not too bad
 

AsianFrustratio

4ubiochemphysbrah
Joined
Oct 18, 2012
Messages
49
Gender
Male
HSC
2014
Damn, easy exam. But I got a bunch of sillies pointed out to me :L

What would a 65~ raw get?
 

obliviousninja

(╯°□°)╯━︵ ┻━┻ - - - -
Joined
Apr 7, 2012
Messages
6,624
Location
Sydney Girls
Gender
Female
HSC
2013
Uni Grad
2017
Why are people crying about the binomial, first two parts were do-able. Everyone is liking the stupid facebook meme, which says it wasn't.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top