VCE General & Further Maths Question Thread!

[mardi]

in b), would i include the H0 in the number of iterations?

[TheCommando]

in b), would i include the H0 in the number of iterations?

Hey Mardi, no you would not
As h0 pretty much means its 0 times if that makes any sense.
Ps im from your school. <3

[BlinkieBill]

Hey,
I am confused about using rounded and unrounded answers in Further. In the exam, what are we expected to use?
For example, if part a asked for an answer to 2 dp
and then for part b you need to use part a's answer, do we use the rounded or unrounded answer??

thanks

[TheCommando]

Hey,
I am confused about using rounded and unrounded answers in Further. In the exam, what are we expected to use?
For example, if part a asked for an answer to 2 dp
and then for part b you need to use part a's answer, do we use the rounded or unrounded answer??

thanks

Best to use the unrouded to increase accuracy

[pmmenotes]

Can anyone show me a example of how they've laid out there boud refernce for chap8/9?

[Aaron]

Hey,
I am confused about using rounded and unrounded answers in Further. In the exam, what are we expected to use?
For example, if part a asked for an answer to 2 dp
and then for part b you need to use part a's answer, do we use the rounded or unrounded answer??

thanks

Hey BlinkieBill, according to the examiner reports for previous years.

All your calculations should be unrounded until you arrive at the final answer.

Rule of thumb: Rounded answers should only be used for the final answer. At no stage should you be rounding during working out, unless it is specifically stated. Always follow what the question is asking.

So ideally, if a question relies on an answer from the previous one.. then you would be using the final answer (the rounded one).

In your specific example, Part A asks for an answer to 2 decimal places. This is a clue to say that this answer should be rounded in the end.

I have answered this question in an older thread. You can see my response here: https://atarnotes.com/forum/index.php?topic=167481.msg899816#msg899816

[TheCommando]

Hey guys what do i pit in my finace solver for all of question 8 and 9 as i got it wrong

And for the second picture where its chapter 8 review how do i do question 7c
Thank you

(Ps wtf i cant upload thoose 2 pictures cause they are to large apparently)
http://imgur.com/a/a4UsE

[Sirius]

Hey guys what do i pit in my finace solver for all of question 8 and 9 as i got it wrong

For 9G, do you mean question 7?
Question 7:
a) N: 60
     I : 6.15
     PV: -25000
    Pmt: -120
    FV: need to be determined = 42378.588
    Ppy and cpy both are 12

b) All same except of Pmt which is now 120 not -120
Question 8: a) N: 120
                          I : 6
                          PV : 0
                          Pmt: -500
                          FV: 81939.67
                          Ppy and cpy 12
b) after ten years
N: 120
I: 6
PV : -81939.67 from previous question
Pmt 500
FV : 67141.10
Ppy and cpy 12

Hope that helps 

[TheCommando]

For 9G, do you mean question 7?
Question 7:
a) N: 60
     I : 6.15
     PV: -25000
    Pmt: -120
    FV: need to be determined = 42378.588
    Ppy and cpy both are 12

b) All same except of Pmt which is now 120 not -120
Question 8: a) N: 120
                          I : 6
                          PV : 0
                          Pmt: -500
                          FV: 81939.67
                          Ppy and cpy 12
b) after ten years
N: 120
I: 6
PV : -81939.67 from previous question
Pmt 500
FV : 67141.10
Ppy and cpy 12

Hope that helps 

Thank you Siruis black!
Nah i got question 7 right originally right sorry

[TheCommando]

Hey could u answer theese questions (my teacher isnt responding and i have my sac tomorow
http://imgur.com/a/NKJcG
For the first picture, how do i do 9 and 10
For the second pic, how do i do 2b
For the third pic, how do i do 3d ii
And for the last pic how do i gp question 3

[Sirius]

And for the second picture where its chapter 8 review how do i do question 7c
Thank you

No worries. 
For chapter 8 review question:
c) You can convert the equation from part a to find the nth term of the sequence
V_n  = Rⁿ * V0
Therefore V ₁₂ = 1.00567¹² * 30000
                                              =  $32104.80

[Ashjames]

Hey guys what do i pit in my finace solver for all of question 8 and 9 as i got it wrong

And for the second picture where its chapter 8 review how do i do question 7c
Thank you

(Ps wtf i cant upload thoose 2 pictures cause they are to large apparently)
http://imgur.com/a/a4UsE

Okay Hun,
Financial modelling can be daunting, but it's simple:
So for question 7c this is how you would do it:
You can either keep putting the recurrence relation into your calculator 12 times until you get the answer, however this would be time-consuming and opens the doors for error. An easier way to do this would be: using the nth term rule : Vn+1= (1+R/100)^n * Vo ( if you can't understand this formula, it is on page 286 on your textbook under COMPOUND INTEREST LOANS AND INVESTMENT)
Then, it's simple, you substitute the values : Vn + (1+ 6.8/12/100)^12* 30000
And you will end up with :$ 32104.80.  For this question I think you're a bit confused you don't use the finance solver, just use the nth term

If you are referring to the 7d, then you would use the finance solver for that one and this is how you would do it:

N: 18 (compounded for 18 months)
I(%): 6.8
PV: 30000 (initial amount that we loaned, remember it's positive because we borrowed it)
Pmt:0
FV: ? (this is what we want to find out)
Ppy/Cpy: 12

And when you press enter, voila!! you get your answer :$ 33211.94

[Sirius]

Hey could u answer theese questions
For the first picture, how do i do 9 and 10

Question 9: Find equation in the nth term
so V0= unknown
R= (1+ (11.65/2)/100) = 1.05825 and V₄₂= $2529.14
Therefore 2529.14 = 1.058⁴² * V0
By algebra V0 = $234.566

[TheCommando]

Okay Hun,
Financial modelling can be daunting, but it's simple:
So for question 7c this is how you would do it:
You can either keep putting the recurrence relation into your calculator 12 times until you get the answer, however this would be time-consuming and opens the doors for error. An easier way to do this would be: using the nth term rule : Vn+1= (1+R/100)^n * Vo ( if you can't understand this formula, it is on page 286 on your textbook under COMPOUND INTEREST LOANS AND INVESTMENT)
Then, it's simple, you substitute the values : Vn + (1+ 6.8/12/100)^12* 30000
And you will end up with :$ 32104.80.  For this question I think you're a bit confused you don't use the finance solver, just use the nth term

If you are referring to the 7d, then you would use the finance solver for that one and this is how you would do it:

N: 18 (compounded for 18 months)
I(%): 6.8
PV: 30000 (initial amount that we loaned, remember it's positive because we borrowed it)
Pmt:0
FV: ? (this is what we want to find out)
Yeah i got it
Thanks 'hun'!!
Its the hardest further topic so far
Ppy/Cpy: 12

And when you press enter, voila!! you get your answer :$ 33211.94

Yeah i got it. Thank you

[Sirius]

Hey could u answer theese questions (my teacher isnt responding and i have my sac tomorow
http://imgur.com/a/NKJcG
For the first picture, how do i do 9 and 10

Question 10

Solve (19282.65 = R⁸ * 18000)
You get R = 1.00864 and R = 1 + (r/4)/100
1+ ( r/4)/100 = 1.00864
And solve this and you get r = 3.456