Yeah I did it by simulataneous equation, but I think I got it wrong coz everyone else is getting simple numbers and mine were like a million numbers long hahahaha.mc88 said:Did any do the growth and decay question like me?
I did them as simultaneous equations, getting A as the subject of one, puttind that into the other equation then substituting the values in, solved that for k, then went back to the original equation, subbed in values again, as well as k and solved it for A.
I ended up ln(13/8) or something for k, and some massive number for A, which was probably because I did the question using the millions, rather than using just the numbers they gave and writing millions after it.
Their numbers are just rounded off, I got the same as them but gave answers in exact form and in decimals. There were a lot of decimals.jexca said:Yeah I did it by simulataneous equation, but I think I got it wrong coz everyone else is getting simple numbers and mine were like a million numbers long hahahaha.
i was..it was crazy. nothing seemed to be formulaic, it was all interpreting the geometry. and all the parts that did involve formulas were q9 type ones so i could hardly answer any of them anyway =(morganforrest said:Was noone else surprised by the flood of geometry questions and complete lack of integral calculus in comparison to past years....interested me
thanks. i felt heaps better when i read your post ...Mah said:Yeah i did something stupid in that question too...I was learning that type of question...(this morning, lol) and the r was 1.08 and I PUT 1.08 INSTEAD of 1.06...But I asked an HSC maths marker and he said that I would be unlucky to lose even half a mark, so you should get most of the marks
Here herejtyler said:I thought it was a very straightforward test :/ (3u student here)... Usually I stick asterisks next to the questions I can't do immediately; didn't have to do that at all in this paper. Found it pretty breezy up to Q10 b, where I somehow lacked the insight to cross-multiply once I'd differentiated, sigh, so stupid. Made the question way harder than it needed to be (and insoluble). That being said I also wrote October - dumb. If I hadn't dicked around so long on Q10 without seeing how simple it really was, I might've had time to check the rest of my paper and change to November :/
LOL me too!! But to the original poster, no way in the world you lost 6 marks if you showed yoru working and patterns in getting the answer. If all else was right, youd lose a maximum of 2 marks for using the wrong R and wrong answer (they could possibly even be lenient and call it a carried error throughout and reward you with the wrong answer - depends on their criteria).Fish Sauce said:Here's hoping!
You scared the crap out of me though, I skim read your post and thought I'd made a mistake with the 1.06. They shouldn't carry the mistake though so you should get some marks I'd say.
You asked quite a few questions, I'll try and answer them all, but i wont respond to the 'tis folly' bs.Harry Bannister said:hey, I don't know who you are, but who do you think you are? Obviously the exam suited you, but perhaps not everyone, perhaps think about the rest who haven't had the perfect run, because tis folly to act wise when ignorance is getting pissed off at those who didn't get the exam they wanted. what's your method when you meet the unexpected? Set up the christmas tree?
LOLLLLLLLLLLLLLLLLLLLLLLLLL!!!!karentao77 said:arghh.. the more i read these posts.. the more i think i did wrong.. :mad1:
gotta stop reading...squeezing stress ball
samuel slack said:Lol... while we're using quotes to attack each other, "why can't we be friends, why can't we be friends?"... Lets all just take a chill pill. Seriously, the exam suited anyone who had learnt the maths 2u course throughout the year. Everyone "should" have learnt enough to pick up a pass, and should have practiced enough to be able to get more than that, and be able to handle any question that they got... Seriously, Armenikum is right, this isn't a restaurant where you can pick and choose what sort of questions you get, they're supposed to challenge you. Nor, do you have to be so harsh in pointing this out Armenikum.
There. Now i feel prepared for a flame, by both groups.
agreed. screwed bits up here and there, but overall, not TOO bad i guess...williamc said:Yer wtf with the expotential growth q in question 8 lol. Nfi, got k to be negative in a growth question ermm.
10b with fucked. 9 was easier than expected.
Then bits and pieces of the paper were hard.
I think it was pretty hard and I studied alot! But i guess im not one of the smartest of the bunch anyway. Oh well... no need complaining now... its all done and finished.Armenikum said:I hate that attitude. What the fuck did you think it was going to be? The same type of questions every year to suit your neat litte sense of security in trying to memorise the types of questions they give? This is year 12, grow up - my brother in yr 9 could do the exams if it was the same thing over and over - BOS catches on, they wanted candidates to APPLY their knowledge of mathematics, not rote learn exact questions.
I know I ranted, but I am just sick of this attitude when people complain when they are confronted with the unexpected - such a child's attitude.
Yes sir.mattwillie said:I think it was pretty hard and I studied alot! But i guess im not one of the smartest of the bunch anyway. Oh well... no need complaining now... its all done and finished.
And in regards to the quote ^... stop complaining. The guy said that he hadnt done a question like that before... not that he had memorised past questions. He had trouble with it and thats that. Now what im gonna say is "This is year 12, grow up..."