VCE Further Maths Exam 1 Discussion and Solutions

[drepwns]

That feeling when you get all the hard questions correct, and realise that you drop marks ON QUESTIONS INVOLVING THE MEAN 

[Hamed Sarwari]

How is question 8 on matrices B? I got A

[hmdeadas]

So life is getting tough!
My SAC marks for math
CORE - 79%
FINANCE - 68%
MATRICES - 80%
NETWROKS -  62%
(ROUGH YEAR) - So for Exam one according to ATARNOTES i got 27/40...
Is their anyway for me to get a 32 or 33 STUDY SCORE???
My ranking is also not high, middle band

[dec.hargreaves]

How is question 8 on matrices B? I got A

it is A

[Joel1999]

Thought the same way. Shouldn't the answer be E then?

Yeah that's what I would have thought....

[Mattjbr2]

So life is getting tough!
My SAC marks for math
CORE - 79%
FINANCE - 68%
MATRICES - 80%
NETWROKS -  62%
(ROUGH YEAR) - So for Exam one according to ATARNOTES i got 27/40...
Is their anyway for me to get a 32 or 33 STUDY SCORE???
My ranking is also not high, middle band

The mean score last year was 50.9/80. You got 54/80. Also, this year's mean is almost certainly much lower than last year's, which means you will get in the low to mid 30s if you do equally well in exam 2. But for now, do as many previous exam 2s as possible in preparation for monday! Its still possible for you to get high 30s if you do well enough in it

[Nomi16]

Hi everyone!
For Graph and relations question 7 is D as C gives the value of n as 200 which is outside the range of the full price.

[RiceSenpai]

What happens if you screw up in further exam 1 but do well in exam 2?

[Sine]

Hi everyone!
For Graph and relations question 7 is D as C gives the value of n as 200 which is outside the range of the full price.

what do you mean by this?

C is the total cost for n pies.
C = 0.8n + 250
C(200) = 0.8 * 200 + 250
C(200) = 410

He sells 150 at full price (x) and sells 50 at half price x/2 he wants to break even so cost of production = total cost sold for
410 = 150x + (50 *x)/2
410 = 150x + 25x
410 = 175x
x = 410/175
x = 2.34
so closest answer is $2.35 i.e. C

[Sine]

What happens if you screw up in further exam 1 but do well in exam 2?

Nothing inherently "happens" but you can definitely salvage/push your score up by doing very well on exam 2

[fizza106]

For CORE question 19 and 20, are all interest only loans set out at perpetuities, so do their values always stay the same?

[Sine]

For CORE question 19 and 20, are all interest only loans set out at perpetuities, so do their values always stay the same?

The stem of the question says she pays the the intrest so what happens is the loan will increase via intrest in a month ($675) then she pays the amount that $675 hence going back to the original value of $225000 and this continually occurs.

[Emwinkler]

Could someone explain the working for Q7 matrices

[reards]

Could someone explain the working for Q7 matrices

Use the recurrence relation given and times that by initial state of population and it gives a 4x1 matrix of 32500 at top, 20000 second row, 8650 third row and 5850 fourth row.

The information given said you had to sell or buy fish to get it back to initial state. So the only answer that worked was A, as 8650 adult fish after one month hence 1650 had to be sold to get it back to the constant state of 7000 adult fish

[mtDNA]

Could someone explain the working for Q7 matrices

I think the best way for you to understand it is to look at the exam 2 questions from 2012-2016, I remember nearly the exact same question pop up in there, so take a look at the examiners report and it will explain the full working (sorry, I just can’t remember which exam it was since I saw it in checkpoints I think)