VCE General & Further Maths Question Thread!

[random_person]

hello, cant wait to ask to my teacher so just going to ask here hehe, matrices module 6
question is

RS=T

s= 2   4         t= 0  2          find matrix r, cant find it in my book either
     1   3              2  0

R=T*S^-1

S^-1 = | 1.5      -2|
            | -0.05    1|

R = | 0    2 | * | 1.5      -2 |
      | 2    0 |    | -0.05    1 |

R = | -1   2  |
      |  3   -4 |
 
Important to note that R does not equal S^-1*T

[flyhighx]

Hi,
Can someone please explain and work out this question
An equilateral triangle has altitudes of 20cm . Find the length of one side.
thanks

[jeanweasley]

Hi,
Can someone please explain and work out this question
An equilateral triangle has altitudes of 20cm . Find the length of one side.
thanks

An equilateral triangle as three same sides and angles, with the angles being 60 degrees equally. For more detail, see : http://au.answers.yahoo.com/question/index?qid=20081011170708AAg8pyQ and here is a diagram to help you: http://free-test-online.com/Content/equilateral%20triangle.jpg

[ficknisher]

Hey guys,
Wondering if anyone could help me out with this question

Q) An equilateral triangle has altitudes of length 20cm. Find the length of one side.

Im completely lost with it

Thanks for your help

[robo_1337]

Read the post above yours...

An equilateral triangle as three same sides and angles, with the angles being 60 degrees equally. For more detail, see : http://au.answers.yahoo.com/question/index?qid=20081011170708AAg8pyQ and here is a diagram to help you: http://free-test-online.com/Content/equilateral%20triangle.jpg

robo

[Stick]

It might be a good idea to put that equilateral triangle stuff in your bound reference. Perhaps the properties of an isosceles triangle will also prove to be useful.

[lala1911]

How did you cope with the time constraint in the exam? Did you feel rushed for time?

[Stick]

I personally didn't, but I've heard that the 'average' Further Maths student will not complete the exam on time. I believe most subject exams are made like this.

If you're fairly proficient at Maths, you should be able to finish both exams quite comfortably, although Exam 1 is generally quicker to complete than Exam 2. This is why I advise students not to rush through the paper and to take your time and do it right the first time, to minimise silly mistakes.

[lala1911]

Thanks, also, did you feel well prepared before sitting the exam? I know it was your only 3/4 so you wouldn't have had as much workload  compared to year 12.

[McFleurry]

How did you cope with the time constraint in the exam? Did you feel rushed for time?

Thanks, also, did you feel well prepared before sitting the exam? I know it was your only 3/4 so you wouldn't have had as much workload  compared to year 12.

I know your questions are kinda directed at Stick, but here's an answer...

For exam 1 (multiple choice) I did each module+ core in 15 minutes, which would leave me 30 mins at the end. I practised doing this for all of my prac exams, but when I got to the exam, well, let's just say there was a minor freak-out... in the end I spent about 20 mins on core and 15 on each module, and left time at the end to check.
So I went in prepared to finish the exam in an hour, and didn't really... but oh, well. I suppose I wasn't really 'rushed for time' (like only having 2 mins to check), but compared to all the prac exams I did, I was a bit 'rushed'.
Exam 2...haha. When I read the question on the direction of the wind in core, I was like....ahhhhh wahhh....... for about 10 mins. But, yeah, same situation for exam 1: I had less time to check than I had originally planned to.

Unlike Stick, I did another 3/4, but I would have to say that I felt quite prepared, I guess in the end it's just a matter of nerves. The year 12s in my class obvs had other subjects, but as we finished the course just before the September break, I suppose they were quite well prepared too.

I suppose a good thing to do would be to give yourself a set amount of time on each module+core so that you don't miss out on 'easy' marks which you can get than spending loads of time on a questions worth only 2 marks. I did my exam backwards: modules first, then core as I was better at modules than core, so play to your strengths, I suppose.

Hope that helps

[Stick]

Thanks, also, did you feel well prepared before sitting the exam? I know it was your only 3/4 so you wouldn't have had as much workload  compared to year 12.

Hell yes. I was doing trial exams in July because that's when our class finished the course. My goal by the exams was essentially to cover every single type of question possible so that nothing could catch me out on the exams (hence the 80+ practice exams). And still, there were some questions unlike anything I'd ever seen before. XD Like McFleurry, I also had a minor panic attack in Exam 1 over six multiple choice questions - use the time provided to calm yourself down and move onto something that's a bit easier to tackle, let your subconscious work on it for a bit and come back to it later.

The extent that I went to last year in order to feel prepared is not a luxury that I have this year. I guess the major difference between Year 11 and Year 12 for me is that I really just don't have the time to go that little bit further in all my subjects and use extra supplementary material. A lot of my study is really based on doing the 'standard' thing, but doing it really thoroughly. I'm hoping my doubts will be (somewhat) addressed by the end of the term 3 holidays, when I know I'll be pumping out the trial exams.

[vashappenin]

Hell yes. I was doing trial exams in July because that's when our class finished the course. My goal by the exams was essentially to cover every single type of question possible so that nothing could catch me out on the exams (hence the 80+ practice exams). And still, there were some questions unlike anything I'd ever seen before. XD Like McFleurry, I also had a minor panic attack in Exam 1 over six multiple choice questions - use the time provided to calm yourself down and move onto something that's a bit easier to tackle, let your subconscious work on it for a bit and come back to it later.

The extent that I went to last year in order to feel prepared is not a luxury that I have this year. I guess the major difference between Year 11 and Year 12 for me is that I really just don't have the time to go that little bit further in all my subjects and use extra supplementary material. A lot of my study is really based on doing the 'standard' thing, but doing it really thoroughly. I'm hoping my doubts will be (somewhat) addressed by the end of the term 3 holidays, when I know I'll be pumping out the trial exams.

Re: practice exams, where'd the 80+ come from, or do you mean 40 sets of exam 1 and 2? Which companies did you get your exams from, and did you end up repeating any exam more than once because you ran out or?
I'm thinking of doing some practice exams for the CORE and 1st module before school starts, and I'm looking towards VCAA. I'll do them knowing that I'll actually end up doing the same questions again closer to the actual exam, but under proper, timed exam conditions (i.e. once the whole course is finished). Do you think it's okay to repeat the VCAA exams or is it better to just do other company exams now and not expose myself to the VCAA questions until later?

[Stick]

I lost count in the end - my teacher just told me 80+ and that's what I've stuck with. Only now can I truly marvel at just how many resources my teacher had. Even when I thought I had run out of practice papers, he managed to find 20 more for me. :S That's not something I know my teachers this year are able to match.

The actual time you do VCAA exams is really not as big an issue as what everyone makes it out to be, because a lot of company papers (with the exception of Kilbaha >_<) are at a fairly relevant standard. As long as you make sure that you mix them up to get a variety of difficulties, you'll be fine.

[Billion]

I lost count in the end - my teacher just told me 80+ and that's what I've stuck with. Only now can I truly marvel at just how many resources my teacher had. Even when I thought I had run out of practice papers, he managed to find 20 more for me. :S That's not something I know my teachers this year are able to match.

The actual time you do VCAA exams is really not as big an issue as what everyone makes it out to be, because a lot of company papers (with the exception of Kilbaha >_<) are at a fairly relevant standard. As long as you make sure that you mix them up to get a variety of difficulties, you'll be fine.

Did your teacher correct these ~80 exams? Or did the come with solutions?
How did you know that you've correctly found the solution?

[Stick]

Solutions were also given to me.