HSC Stuff > HSC Standard Mathematics
Standard Math Q+A Thread
RuiAce:
--- Quote from: brontem on July 12, 2016, 10:51:14 pm ---Why not??
--- End quote ---
True. Just didn't want the general guys to jump :P so I'll put in some informality.
You could say discrete data is formed out of the integers, or some finite set (because they can be corresponded to the integers or any counting numbers really). Discrete can be used to say how there's gaps, and the distinction between two consecutive (discrete) elements are quite obvious. Like you obviously skip over a load of rational numbers to get from one integer to the other.
You could say same goes for rational numbers as well, because you don't know where the next irrational number is but you know that one is obviously there.
Something continuous would be like all reals. An entire field of elements, one after the other and you really can't tell one apart. If you're on a continuous interval, you're basically mapping all the real numbers or just some closed/open interval that's a subset of R.
This is why height can be seen as continuous. You can say that you're 172cm tall but what if you're 172.9141244255231014597...cm tall
brontem:
--- Quote from: RuiAce on July 12, 2016, 11:02:19 pm ---True. Just didn't want the general guys to jump :P so I'll put in some informality.
You could say discrete data is formed out of the integers, or some finite set (because they can be corresponded to the integers or any counting numbers really). Discrete can be used to say how there's gaps, and the distinction between two consecutive (discrete) elements are quite obvious. Like you obviously skip over a load of rational numbers to get from one integer to the other.
You could say same goes for rational numbers as well, because you don't know where the next irrational number is but you know that one is obviously there.
Something continuous would be like all reals. An entire field of elements, one after the other and you really can't tell one apart. If you're on a continuous interval, you're basically mapping all the real numbers or just some closed/open interval that's a subset of R.
This is why height can be seen as continuous. You can say that you're 172cm tall but what if you're 172.9141244255231014597...cm tall
--- End quote ---
Rightio I get where you're coming from but thankfully this is only ever a multiple choice or 1 word answer to a question :P :P
brenden:
Bloody hell Rui. You even freaked ME out! See you soon mate haha :)
skysailingaway:
Hai
its my first time here and so far, i'm loving the resources and support offered on this site.
concerning general maths, i have a huge problem with sitting tests~ my mind goes blank and nothing makes sense.
plus i also find the finance topic hard to understand, what type of practice should i do to make sure i don't blank out?
~ this has happened on multiple tests now and i really don't want it to happen on my trials!
RuiAce:
--- Quote from: skysailingaway on July 13, 2016, 01:55:42 pm ---Hai
its my first time here and so far, i'm loving the resources and support offered on this site.
concerning general maths, i have a huge problem with sitting tests~ my mind goes blank and nothing makes sense.
plus i also find the finance topic hard to understand, what type of practice should i do to make sure i don't blank out?
~ this has happened on multiple tests now and i really don't want it to happen on my trials!
--- End quote ---
With general maths, it will be much harder to find past trial papers. If you do get your hands on them however? Great.
PastHSC has a list of the questions arranged with respect to the syllabus updated 2014. My advice is to do the past papers from the older years (keeping the recent ones for your final HSC exam), and maybe one (or two) papers under exam conditions. Figure out why your mind goes blank in tests.
(If you rely on the textbook too much, there is your answer. Textbooks, whilst not being ridiculously off, will never reflect the scope of an exam.)
Ask your school for any past papers that they might have and do them. Also redo your past exams figuring out where you went wrong and what the right frame of mind is.
Regarding the finance topic, for actual questions you may struggle on just post them on here and we'll guide you through a thought process.
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