Post by: avram_grant on November 09, 2009, 02:32:18 pm
Post by: almostatrap on November 09, 2009, 02:34:39 pm
Post by: avram_grant on November 09, 2009, 02:35:49 pm
Post by: kaanonball on November 09, 2009, 02:36:19 pm
Post by: almostatrap on November 09, 2009, 02:36:43 pm
did anyone get 5pm for the last question
I did
Post by: avram_grant on November 09, 2009, 02:37:24 pm
Post by: VeryCrazyEdu. on November 09, 2009, 02:38:00 pm
*waits for answers to be posted up* :)
Post by: naved_s9994 on November 09, 2009, 02:39:31 pm
But I think I did well.
Waiting for the solutions to pop-up.
Post by: avram_grant on November 09, 2009, 02:39:41 pm
Post by: VeryCrazyEdu. on November 09, 2009, 02:40:23 pm
for Q3: c(i) did anyone get 0.8985, i used conditional probability
yeah i did :)
Post by: avram_grant on November 09, 2009, 02:40:55 pm
Post by: naved_s9994 on November 09, 2009, 02:41:12 pm
yeah it was pretty good. It took ages for question 4 to click...LOL, same!
*waits for answers to be posted up* :)
I only left 2 marks empty (I.e not attempting),, but the rest I did with ease.
Finished with 8-9 minutes in hand.
Post by: emkate on November 09, 2009, 02:41:18 pm
for Q3: c(i) did anyone get 0.8985, i used conditional probability
same :)
Post by: nels on November 09, 2009, 02:42:01 pm
Post by: ngRISING on November 09, 2009, 02:42:44 pm
M & P can be found using the quadratic formula :D
Post by: dezz on November 09, 2009, 02:43:06 pm
that question was worth 3 marks :(
hope i scabbed 1-2 out of it , couldnt get it.
tried to use z = x-u/sd but was confused with the x value ;'(
finished with about 15-20minutes left, still couldnt get about 3 of the MC... somehow didnt click into equating the very last question, gg to that 2 marks..
and yea the SD
70+ Hopefully... :-\
Post by: avram_grant on November 09, 2009, 02:43:49 pm
Post by: VeryCrazyEdu. on November 09, 2009, 02:45:00 pm
i got 0.54 somehow.... hope it is right
I got that too! :D
Post by: dezz on November 09, 2009, 02:45:25 pm
but how'd use get it o.0 if your talking about the SD question:\i got 0.54 somehow.... hope it is right
I got that too! :D
Post by: forsaken231 on November 09, 2009, 02:46:17 pm
Post by: emkate on November 09, 2009, 02:46:29 pm
what did use do to find the standard deviation?
that question was worth 3 marks :(
hope i scabbed 1-2 out of it , couldnt get it.
tried to use z = x-u/sd but was confused with the x value ;'(
finished with about 15-20minutes left, still couldnt get about 3 of the MC... somehow didnt click into equating the very last question, gg to that 2 marks..
and yea the SD
70+ Hopefully... :-\
i found the corresponding z value for 63.4 (or whatever the lowest umber was) by invnrm(0.01) then used z=x-u/sd
dont know if thats right though...
Post by: nels on November 09, 2009, 02:48:07 pm
Post by: dejan91 on November 09, 2009, 02:48:40 pm
Post by: emkate on November 09, 2009, 02:48:45 pm
Post by: Edmund on November 09, 2009, 02:49:38 pm
Post by: VeryCrazyEdu. on November 09, 2009, 02:50:25 pm
OMG DID TASMANIA JONES DIE?
no..it was a cliffhanger...we don't even know if he rescued the statue lol
Post by: simpak on November 09, 2009, 02:51:40 pm
i got 0.54 somehow.... hope it is right
I GOT THAT TOO.
Oh my god if it's right I will be so happy.
Post by: emkate on November 09, 2009, 02:53:09 pm
OMG DID TASMANIA JONES DIE?
no..it was a cliffhanger...we don't even know if he rescued the statue lol
i know i was cut....thought i was missing a page of the exam or something lol...
Post by: almostatrap on November 09, 2009, 02:54:32 pm
last probability question i think.
Post by: avram_grant on November 09, 2009, 02:55:12 pm
Post by: /0 on November 09, 2009, 02:55:39 pm
Post by: jimmy999 on November 09, 2009, 02:55:53 pm
what did people get for the minimum number of years, n?This was in the CAS paper. I got n = 8
last probability question i think.
Post by: nels on November 09, 2009, 02:56:10 pm
did anyone get 2x+2 for the tangent one?
and E for the independent events one?
Post by: avram_grant on November 09, 2009, 02:57:09 pm
how gay were the multiple choice questions? tedious as.
did anyone get 2x+2 for the tangent one?
and E for the independent events one?
yeh i got 2x + 2, but i got A for the independent
Post by: VeryCrazyEdu. on November 09, 2009, 02:58:05 pm
how gay were the multiple choice questions? tedious as.
did anyone get 2x+2 for the tangent one?
and E for the independent events one?
I got A too and 2x + 2...
yeh i got 2x + 2, but i got A for the independent
Post by: Murph#3 on November 09, 2009, 02:58:30 pm
Post by: MiCCAS on November 09, 2009, 02:58:52 pm
i got 0.54 somehow.... hope it is right
I'm pretty sure I got that too.
Post by: emkate on November 09, 2009, 02:59:39 pm
how gay were the multiple choice questions? tedious as.
did anyone get 2x+2 for the tangent one?
and E for the independent events one?
yea same here..2x + 2 and A
I got A too and 2x + 2...
yeh i got 2x + 2, but i got A for the independent
Post by: almostatrap on November 09, 2009, 03:00:13 pm
lol you sure your doing the right exam?
im cas, is that it?
Post by: avram_grant on November 09, 2009, 03:00:18 pm
Post by: littlecherry25 on November 09, 2009, 03:01:31 pm
Post by: VeryCrazyEdu. on November 09, 2009, 03:01:51 pm
for the gradient question did you get a = 81/4
yeah i did wooo i am actually feeling better about this exam now...
Post by: MiCCAS on November 09, 2009, 03:02:28 pm
someone post up the exam? I wanna see what happened to tassie jones
Scanning now!
Post by: littlecherry25 on November 09, 2009, 03:02:40 pm
that stupid last question about t
i wrote d=t
arghhh didn't think about it or read the question properly
it should d = 14 - t shouldn't ittttttt
Post by: Murph#3 on November 09, 2009, 03:03:43 pm
Post by: cjays66 on November 09, 2009, 03:04:12 pm
i think i only lost one mark on that...yea i got that.
that stupid last question about t
i wrote d=t
arghhh didn't think about it or read the question properly
it should d = 14 - t shouldn't ittttttt
Post by: tl on November 09, 2009, 03:04:16 pm
i think i only lost one mark on that...
that stupid last question about t
i wrote d=t
arghhh didn't think about it or read the question properly
it should d = 14 - t shouldn't ittttttt
yeah.. d=14-t xD
Post by: THem on November 09, 2009, 03:04:29 pm
Post by: tl on November 09, 2009, 03:05:00 pm
Post by: avram_grant on November 09, 2009, 03:05:09 pm
Post by: RexPP on November 09, 2009, 03:05:54 pm
I was getting e^3 + 3 so I ended up just circling e^3 +2
Post by: khalil on November 09, 2009, 03:06:11 pm
i think i only lost one mark on that...
that stupid last question about t
i wrote d=t
arghhh didn't think about it or read the question properly
it should d = 14 - t shouldn't ittttttt
HAHA...exactly what I did, BUT i changed it....lol
Post by: THem on November 09, 2009, 03:06:24 pm
Post by: moekamo on November 09, 2009, 03:06:35 pm
Post by: VeryCrazyEdu. on November 09, 2009, 03:06:49 pm
Pretty hard exam, I thought, but there were only 3 marks I left unanswered - the new standard deviation question. WHat did people think of the last multiple choice? I did it like 3 times and kept getting an answer that wasn't there ... what was it supposed to be?
I got D but can't remember the question lol xD
Post by: iwakura on November 09, 2009, 03:06:56 pm
Post by: tl on November 09, 2009, 03:07:00 pm
Pretty hard exam, I thought, but there were only 3 marks I left unanswered - the new standard deviation question. WHat did people think of the last multiple choice? I did it like 3 times and kept getting an answer that wasn't there ... what was it supposed to be?
It was D i think.. you had to find the area of a square then the area under the log(x-1) curve..
Post by: chengerz on November 09, 2009, 03:07:20 pm
Post by: tl on November 09, 2009, 03:08:04 pm
So I'll lose a mark for not adding that t onto after 9 am?yeah 1 mark gone for that :( it asked for "WHAT TIME"..
Post by: RexPP on November 09, 2009, 03:08:08 pm
Pretty hard exam, I thought, but there were only 3 marks I left unanswered - the new standard deviation question. WHat did people think of the last multiple choice? I did it like 3 times and kept getting an answer that wasn't there ... what was it supposed to be?
It was D i think.. you had to find the area of a square then the area under the log(x-1) curve..
That's what I did but couldn't get any of the options. Oh well, if it was D then I guessed right :)
Post by: chuckjefster90 on November 09, 2009, 03:09:22 pm
Post by: chengerz on November 09, 2009, 03:10:00 pm
Post by: tl on November 09, 2009, 03:10:08 pm
yeah anyone find the mulitple choice questions more confusing than extended response?
My mind went blank for the last 3.. but i got them ^^
Post by: cjays66 on November 09, 2009, 03:11:10 pm
Post by: tl on November 09, 2009, 03:11:31 pm
can anyone remember what the last mc was?
D definitely.
Post by: VeryCrazyEdu. on November 09, 2009, 03:12:20 pm
can anyone remember what the second last mc was?
I said B
Post by: chengerz on November 09, 2009, 03:12:38 pm
Post by: simpak on November 09, 2009, 03:12:45 pm
Pretty hard exam, I thought, but there were only 3 marks I left unanswered - the new standard deviation question. WHat did people think of the last multiple choice? I did it like 3 times and kept getting an answer that wasn't there ... what was it supposed to be?
I got D but can't remember the question lol xD
I was tossing up between D and C and picked C D:
When in doubt...pick...C?
Yeah, I guess I won't be using that philosophy anymore.
Post by: TheJosh on November 09, 2009, 03:14:02 pm
how gay were the multiple choice questions? tedious as.
did anyone get 2x+2 for the tangent one?
and E for the independent events one?
yes 2x + 2 i got :)
Post by: simpak on November 09, 2009, 03:15:33 pm
yeah anyone find the mulitple choice questions more confusing than extended response?
Yes!
Post by: cjays66 on November 09, 2009, 03:18:35 pm
Post by: chuckjefster90 on November 09, 2009, 03:19:36 pm
Post by: avram_grant on November 09, 2009, 03:19:49 pm
Post by: nels on November 09, 2009, 03:24:26 pm
Post by: tl on November 09, 2009, 03:24:32 pm
anyone got .2km for distance between train and the rock?
I did.. it was like 6.2 - 6??
Post by: simpak on November 09, 2009, 03:25:23 pm
anyone got .2km for distance between train and the rock?
I did.. it was like 6.2 - 6??
OOPS
I totally forgot about that part of the question and left my answer as 6.
Oops, well, one mark gone.
Post by: avram_grant on November 09, 2009, 03:25:30 pm
mod signs? oh no did i miss something?sqrt(x^2) = |x| - dunno if you needed to put mod
Post by: dcc on November 09, 2009, 03:27:03 pm
Post by: littlecherry25 on November 09, 2009, 03:27:32 pm
anyone got .2km for distance between train and the rock?
but the question asked for exact so it was 1\5?
(CAS)
Post by: avram_grant on November 09, 2009, 03:28:15 pm
Post by: tl on November 09, 2009, 03:28:20 pm
anyone got .2km for distance between train and the rock?
but the question asked for exact so it was 1\5?
(CAS)
AIYA! .2 is exact my friend :)
Post by: THem on November 09, 2009, 03:28:41 pm
anyone got .2km for distance between train and the rock?
but the question asked for exact so it was 1\5?
(CAS)
lol
Post by: littlecherry25 on November 09, 2009, 03:29:46 pm
I'm not sure what the question was, but sayingis fine as long as there is an implicit understanding that you are only considering non-negative x. Maybe you'd need to explicitly state it in your answer to get the mark, I'm not too sure how VCE markers work.
you have to put the mod sign ...
the graph would look different if you didn't (obviously)
and because sqrt of something has to be bigger than or equal to zero
that is already defined for f(x)
so when you put g(x) into it, you have to put mod around it to make it bigger than zero
Post by: littlecherry25 on November 09, 2009, 03:30:47 pm
lol omg u seriousanyone got .2km for distance between train and the rock?
but the question asked for exact so it was 1\5?
(CAS)
lol
geez you people are good at making me feel dumb.
Post by: almostatrap on November 09, 2009, 03:34:09 pm
happened in exam 1 and 2
Post by: dezz on November 09, 2009, 03:37:15 pm
Post by: tl on November 09, 2009, 03:37:18 pm
correct answer + excess time to check = wrong answer :'(
happened in exam 1 and 2
Incorrect answer + excess time to check = not realise
Post by: lookche on November 09, 2009, 03:38:18 pm
mod signs? oh no did i miss something?sqrt(x^2) = |x| - dunno if you needed to put mod
I'm not sure what the question was, but saying
you MUST put in modulus signs, it changes the entire answer for negative values of x if you don't. sqrt(x^2) is actually |x| because for instance (-1)^2 = 1 thus sqrt of 1 = 1, not -1.
because once you did that you were less tempted to do a simple derivative (alla 6x to 6....you had to fully chain rule it) so you ended up with something over root(x^2), which of course cant be zero, which satisfies the condition that x cannot equal 0.
Post by: dcc on November 09, 2009, 03:38:25 pm
you have to put the mod sign ...
the graph would look different if you didn't (obviously)
and because sqrt of something has to be bigger than or equal to zero
that is already defined for f(x)
so when you put g(x) into it, you have to put mod around it to make it bigger than zero
you MUST put in modulus signs, it changes the entire answer for negative values of x if you don't. sqrt(x^2) is actually |x| because for instance (-1)^2 = 1 thus sqrt of 1 = 1, not -1.
because once you did that you were less tempted to do a simple derivative (alla 6x to 6....you had to fully chain rule it) so you ended up with something over root(x^2), which of course cant be zero, which satisfies the condition that x cannot equal 0.
Whoa nellies, calm down. I didn't take the exam, I was just speculating that if the function under consideration had a non-negative domain, then you could correctly say that
Looking at the questions now (since I only just got linked to them), it is clear that you would need the modulus signs. That, or leaving it as
Post by: tripz on November 09, 2009, 03:48:13 pm
Post by: Chocolate01 on November 09, 2009, 03:56:47 pm
Thnx gyz
Post by: avram_grant on November 09, 2009, 03:57:04 pm
Post by: simpak on November 09, 2009, 03:59:42 pm
lol i bet like only 1% of the state put mod signs
I put mod signs.
Post by: iwakura on November 09, 2009, 04:01:21 pm
The last bit of question one I had a closed circle at x =0, so far confirming with teachers that's the only thing I lost. Add that to 1 mark off from the 1st exam so if I'm lucky that's the only stuff I lost marks onwhat did people get for the minimum number of years, n?This was in the CAS paper. I got n = 8
last probability question i think.
yay for james :) i know youuu
Post by: NE2000 on November 09, 2009, 04:03:40 pm
lol i bet like only 1% of the state put mod signs
I put mod signs.
Put mod signs too :)
And then the derivative was split into two parts, like a hybrid function derivative?
From talking to people many people forgot the whole mod sign thing.
Post by: ngRISING on November 09, 2009, 04:21:26 pm
Post by: btuned on November 09, 2009, 05:07:47 pm
can anyone remember what the second last mc was?B for me as well. How did the question go? I'll remember what it's about if you remember the question
Post by: chinx_4eva on November 09, 2009, 05:18:10 pm
even though i still put them
because is square any number.. it would become positive.
hence the square root would always be positive. :)
Post by: kendraaaaa on November 09, 2009, 05:21:03 pm
Post by: phuiii on November 09, 2009, 05:22:01 pm
sqrt(x^2)= |x|, lets hope they don't penalise it.
Exam wasn't too bad, last questions threw me off, didn't have enough time to answer it.
Post by: linny on November 09, 2009, 06:11:38 pm
Post by: physics on November 09, 2009, 06:37:07 pm