VCE General & Further Maths Question Thread!

[VeryJuicyLemon]

That's what I thought too until I saw the VCAA 2018 NHT Exam 2 report having them labelled. Now I am not too sure.
Interesting...
(Image removed from quote.)

I checked others and they weren't labelled. So I wouldn't worry about this, VCAA would of mentioned to include coords for end points if they were needed

[gracemccomb]

Can anyone help me with this question? I don't know how to find the residual without the actual value. Its from NHT Exam 1

Thank you!!

[Lear]

Can anyone help me with this question? I don't know how to find the residual without the actual value. Its from NHT Exam 1

Thank you!!

The actual value is given in the table in previous parts

[xdmemeguy]

In regards to Matrices, does VCAA by default put the win on the comlumns or the rows on dominance matrices.

Like this
  loses to
[  x   x   x ]
[  x   x   x ] wins
[  x   x   x ]

or

  wins
[  x   x   x ]
[  x   x   x ] loses to
[  x   x   x ]

[S_R_K]

Hey Guys,

When drawing a least square regression line in exam 2 are you supposed to extend the line past the max and min x values of the data points given? I was thinking you don't extend the line because that would show extrapolation but the 2017 answers had a question that extended the line to reach the y axis etc.

Draw the line for the entire length of the scale.

Yes, some points on your line may involve extrapolation, which would make the predictions less reliable. But the graph of the least-squares line is still correct when the line extends beyond the range of the data.

[studyingg]

In regards to Matrices, does VCAA by default put the win on the comlumns or the rows on dominance matrices.

Like this
  loses to
[  x   x   x ]
[  x   x   x ] wins
[  x   x   x ]

or

  wins
[  x   x   x ]
[  x   x   x ] loses to
[  x   x   x ]

They would let you know from the question.

[Omarrr_2163]

What would be the inverse of the 2x2 matrix:
[2k  3k]
[4k  7k]

Thats one matrix btw^

[studyingg]

What would be the inverse of the 2x2 matrix:
[2k  3k]
[4k  7k]

Thats one matrix btw^

1/2k^2 * \begin{pmatrix}7k&-3k\\ 4k&2k\end{pmatrix} or \begin{pmatrix}\frac{7}{2k}&-\frac{3}{2k}\\ \frac{2}{k}&\frac{1}{k}\end{pmatrix}

[nicholas9027]

Hey Guys,
I need help with this tricky NHT 2017 exam 1 question. the answers say something about 600/400 X 15
but i dont get it can someone pls explain
the answer is A by the way

Thanks

[spursy]

can someone tell me an easy method to crash in networks
i think there is a method where you list all the paths but i'm not sure

[Lear]

Hey Guys,
I need help with this tricky NHT 2017 exam 1 question. the answers say something about 600/400 X 15
but i dont get it can someone pls explain
the answer is A by the way

Thanks

If ALL points along AB are a solution, the Objective function must have the same gradient as the line AB.
Try it out and if you need more help let us know

[MB_]

Hey Guys,
I need help with this tricky NHT 2017 exam 1 question. the answers say something about 600/400 X 15
but i dont get it can someone pls explain
the answer is A by the way

Thanks

I think you've attached the wrong screenshot as the correct answer to the question in the screenshot is B

[Maliat]

Hi guys!
I'm in yr 10 and just had my first 3&4 exam yesterday, further maths.
So far I've got A+ for all SACS and a sitting at rank 1
I was just wondering about what study score I can expect, I dropped a mark in exam 1 
I've heard that SS depends also on how the state does and your school cohort.

[Sine]

Hi guys!
I'm in yr 10 and just had my first 3&4 exam yesterday, further maths.
So far I've got A+ for all SACS and a sitting at rank 1
I was just wondering about what study score I can expect, I dropped a mark in exam 1 
I've heard that SS depends also on how the state does and your school cohort.

You are rank 1 so your cohort won't impact you too much if you get the highest score (or close to the highest score) in your cohort. If you continue doing this well in exam 2 you are looking at a study score in the high 40's.

[Bell9565]

Hi guys!
I'm in yr 10 and just had my first 3&4 exam yesterday, further maths.
So far I've got A+ for all SACS and a sitting at rank 1
I was just wondering about what study score I can expect, I dropped a mark in exam 1 
I've heard that SS depends also on how the state does and your school cohort.

It really depends on how you go on the exam on Monday - I know a kid who got a 50 as rank one who dropped 1 mark on exam 1 then full marked exam 2 ... then I know others who got low 40's because they bombed the 2nd exam with a similar 1st exam mark. It really really depends on how you do in exam 2 - either way you should be comfortably above 40!
A very (very) simplified way of how VCAA work out study scores is they rank every person in the state who did the subject then put it on a bell curve and deal out study scores based on where you sit on that bellcurve (you actually learn the maths behind it in methods 3/4 which if you're doing further in year 10 I'd assume you would do eventually). So if the rest of the state does worse than you, you'll be up the top and you'll get a 50 but if its an easy exam and lots of people do really well, you'll get a lower study score with the same exam mark. So your study score is how you do in relation to the state so yeah, the state does affect your study score to a degree.
If you're rank one and you do the best on both exams, you're cohort won't affect you... it only really starts making a difference if you're lower down and even then, its not ~that~ much. Once again, its all to do with the bellcurve and they pretty much just do it to moderate the SACs from different schools on that bellcurve i mentioned earlier however ultimately, you want everyone from your school to do well on the exams because then VCAA thinks you had harder SACs so you technically do better in them.
I hope that helps with your questions (just elaborating on what Sine said a little )