VCE General & Further Maths Question Thread!

[Samueling]

On the 2012 Vcaa further maths exam 2,
On the core section, question 4a.
I got (ws3.00pm)^2 = 3.3 + 0.5 x ws9.00am.
However, it's wrong. The answer is: (ws3.00pm)^2 = 3.4 + 6.6 x ws9.00am.
I triple checked the variable that i placed in my CAS, however i still got it wrong....
someone please explain!

Thanks

[doomdestroyer]

On the 2012 Vcaa further maths exam 2,
On the core section, question 4a.
I got (ws3.00pm)^2 = 3.3 + 0.5 x ws9.00am.
However, it's wrong. The answer is: (ws3.00pm)^2 = 3.4 + 6.6 x ws9.00am.
I triple checked the variable that i placed in my CAS, however i still got it wrong....
someone please explain!

Thanks

I know what you have done wrong, quite a silly mistake, but it happens. When selecting "Calc" and "Linear Reg" make sure the correct list for the transformed variable is selected, the answer you got is from the normal variable not the transformed variable.

[Samueling]

I know what you have done wrong, quite a silly mistake, but it happens. When selecting "Calc" and "Linear Reg" make sure the correct list for the transformed variable is selected, the answer you got is from the normal variable not the transformed variable.

ahhhhhhhh..... No wonder its (ws3.00)^2
thank youu

[myanacondadont]

When describing graphs is there only 3 things we have to fulfill? Those being direction (positive/negative), strength (moderate,strong,weak) and type (linear etc) ?

And if they don't fall into a type we just describe what we see? e.g Y decreases from x = 1 to x = 5, and at which it remains steady until x = 15...etc?

What other worded questions could they ask us?

[footyal9]

I dropped 3.5 marks in my sacs out of 80, I'm equal second in my cohort the top 4 are two marks apart most people will be aiming for 30-35 and there are 8ish out of 70 kids aiming for 40 most should get it, is that a strong cohort? I aced multiple choice if I ace short answer what could I expect to get? Any chance of a 50?

[Dan1995]

I dropped 3.5 marks in my sacs out of 80, I'm equal second in my cohort the top 4 are two marks apart most people will be aiming for 30-35 and there are 8ish out of 70 kids aiming for 40 most should get it, is that a strong cohort? I aced multiple choice if I ace short answer what could I expect to get? Any chance of a 50?

Dropping 3.5/80 is a low-mid range A+, so chances of a 50 would be slim, but high 40's is still very achievable.

[~V]

How do you know when to round up or down? because in a matrices module, it was 331.25 but they rounded down, this was about trouts so you can't have .25 of a trout. Another question in the graphs and relations module, was referring to students, 42.22, i rounded it down to 42 but the answer was 43... help!
EDIT: Never mind, not an issue anymore.

[Dan1995]

How do you know when to round up or down? because in a matrices module, it was 331.25 but they rounded down, this was about trouts so you can't have .25 of a trout. Another question in the graphs and relations module, was referring to students, 42.22, i rounded it to 43 but the answer was 42... help!

General rule is when the decimal is below .5, you round down, if it's 0.5 or greater you round up.

[Sam_4331]

does anyone have answers for exam 2, will they be put online today?

[cevap]

I just did the exam 2 and was talking to a friend of mine and we were comparing answers, for exam 1 we both got the same 39/40 but in exam 2 for most questions we were identical except for 1 mark, i am rank 1 while the friend is rank 3, will this 1 mark allow them to get a better study score (im not 100% that it is only 1 mark they could have lost some more or i could have) but i was wondering if rank could help me stay in 1st position in terms of study score.
Thanks

[forchina]

Does anybody remember if for 3c where they ask max amount of tomatoes to ensure no loss, did they ask you to round to nearest whole kilograms? I don't recall reading that part so i left the answer as 15.2

[myanacondadont]

Does anybody remember if for 3c where they ask max amount of tomatoes to ensure no loss, did they ask you to round to nearest whole kilograms? I don't recall reading that part so i left the answer as 15.2

Ahah I can't remember but I rounded my answer as 15. Shiiiiit.

[lokzo]

Will someone be uploading exam 2? + Solutions?

[Dan1995]

Will someone be uploading exam 2? + Solutions?

They're up, in the exam discussion forum.
Further Maths Exam 2- Tentative Solutions

[alan3152]

What SS can I get for:
SAC: 99.7/100 (Rank 1) (Average cohort about 80people)
Exam 1: 38/40
Exam 2: 57/60