Login

Welcome, Guest. Please login or register.

March 29, 2024, 01:24:31 am

Author Topic: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions  (Read 22756 times)

0 Members and 1 Guest are viewing this topic.

AlphaZero

  • MOTM: DEC 18
  • Forum Obsessive
  • ***
  • Posts: 352
  • \[\Gamma(z)\Gamma(1-z)=\frac{\pi}{\sin(\pi z)}\]
  • Respect: +160
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #15 on: November 12, 2018, 06:29:16 pm »
0
MCQ
1. E
2. B
3. D
4. A
5. D
6. C
7. C
8. E
9. C
10. A
11. C
12. E
13. B
14. C
15. E
16. B
17. E
18. D
19. E
20. B
ERQ1
1a.
1b: GRAPH TO COME
1c:
1d:
1ei:
1eii: \[g\left(x\right)=\lbrace\begin{array}{ll}
      -4 & -\sqrt{2}<x<0 \\
      4 & 0<x<\sqrt{2} \\
\end{array}\]
1eiii: GRAPH TO COME
ERQ2
2a:
2b:
2c/d: GRAPH TO COME
2e:
ERQ3
3a:
3b:
3ci:
3cii:
3d:
3e:
3f:
ERQ4
4a:
4b:
4c:
4d:
4e:
ERQ5
5a: IMAGE TO COME
5bi:
5bii:
5c: - NOTE: This is NOT the same form as specified in the question. I haven't had time to have a good look, but my feeling (after speaking with a number of other people) is that there was an error in this exam...
5d:
5ei:
5eii:
ERQ6

6b:
6c:
6d: \(p<0.05\), therefore, \(H_{0}\) should be rejected
6e:
6f:
6g:

Well done jazzycab!!
2015\(-\)2017:  VCE
2018\(-\)2021:  Bachelor of Biomedicine and Mathematical Sciences Diploma, University of Melbourne


mzhao

  • Trailblazer
  • *
  • Posts: 33
  • Respect: +5
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #16 on: November 12, 2018, 06:30:10 pm »
0
It's alright if you subbed in g=9.8 right? But still kept it in the correct form.

VCAA usually doesn't discriminate between 'g' and '9.8' :)
2016: Algorithmics [48 + Premier's Award]
2017: Biology [46], Methods [50 + Premier's Award]
2018: Physics [50], Specialist [50 + Premier's Award]
2019: Chemistry [40], English [42], English Language [44], UMEP Mathematics [5.0]
ATAR: 99.95

DinWell

  • Trendsetter
  • **
  • Posts: 128
  • I didn't do well
  • Respect: +14
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #17 on: November 12, 2018, 06:39:31 pm »
0
MCQ
1. E
2. B
3. D
4. A
5. D
6. C
7. C
8. E
9. C
10. A
11. C
12. E
13. B
14. C
15. E
16. B
17. E
18. D
19. E
20. B
ERQ1
1a.
1b: GRAPH TO COME
1c:
1d:
1ei:
1eii: \[g\left(x\right)=\lbrace\begin{array}{ll}
      -4 & -\sqrt{2}<x<0 \\
      4 & 0<x<\sqrt{2} \\
\end{array}\]
1eiii: GRAPH TO COME
ERQ2
2a:
2b:
2c/d: GRAPH TO COME
2e:
ERQ3
3a:
3b:
3ci:
3cii:
3d:
3e:
3f:
ERQ4
4a:
4b:
4c:
4d:
4e:
ERQ5
5a: IMAGE TO COME
5bi:
5bii:
5c: - NOTE: This is NOT the same form as specified in the question. I haven't had time to have a good look, but my feeling (after speaking with a number of other people) is that there was an error in this exam...
5d:
5ei:
5eii:
ERQ6

6b:
6c:
6d: \(p<0.05\), therefore, \(H_{0}\) should be rejected
6e:
6f:
6g:
4e. wasn't it to a certain number of decimal places? 6e. Why 146.52? I got 146.51. I get that it has to be greater than 146.5107385.... but will they say 146.51 is wrong?
2018: English [???] | Methods [???] | Specialist [???] | Physics [???] | Chemistry [???]
2019: ???

iroze007

  • Adventurer
  • *
  • Posts: 13
  • Respect: 0
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #18 on: November 12, 2018, 06:40:35 pm »
0
MCQ
1. E
2. B
3. D
4. A
5. D
6. C
7. C
8. E
9. C
10. A
11. C
12. E
13. B
14. C
15. E
16. B
17. E
18. D
19. E
20. B
ERQ1
1a.
1b: GRAPH TO COME
1c:
1d:
1ei:
1eii: \[g\left(x\right)=\lbrace\begin{array}{ll}
      -4 & -\sqrt{2}<x<0 \\
      4 & 0<x<\sqrt{2} \\
\end{array}\]
1eiii: GRAPH TO COME
ERQ2
2a:
2b:
2c/d: GRAPH TO COME
2e:
ERQ3
3a:
3b:
3ci:
3cii:
3d:
3e:
3f:
ERQ4
4a:
4b:
4c:
4d:
4e:
ERQ5
5a: IMAGE TO COME
5bi:
5bii:
5c: - NOTE: This is NOT the same form as specified in the question. I haven't had time to have a good look, but my feeling (after speaking with a number of other people) is that there was an error in this exam...
5d:
5ei:
5eii:
ERQ6

6b:
6c:
6d: \(p<0.05\), therefore, \(H_{0}\) should be rejected
6e:
6f:
6g:

6e) 146.51? instead of 146.52
Offering Tutoring in 2021 for Methods, Specialist, Chemistry and Physics. DM me for more info.

2016
Maths Methods [48]

2018
Specialist Maths [48]

2019
English [50] | Chemistry [50] | Physics [50]

ATAR - 99.95

2020
Bachelor of Medical Science and Doctor of Medicine @ Monash

mzhao

  • Trailblazer
  • *
  • Posts: 33
  • Respect: +5
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #19 on: November 12, 2018, 06:43:07 pm »
0
4e. wasn't it to a certain number of decimal places?

4.1 if I recall correctly!
2016: Algorithmics [48 + Premier's Award]
2017: Biology [46], Methods [50 + Premier's Award]
2018: Physics [50], Specialist [50 + Premier's Award]
2019: Chemistry [40], English [42], English Language [44], UMEP Mathematics [5.0]
ATAR: 99.95

fluff

  • Trailblazer
  • *
  • Posts: 31
  • Respect: 0
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #20 on: November 12, 2018, 06:45:38 pm »
0
Did 4e ask for the total time (4.1) or the time interval?

DinWell

  • Trendsetter
  • **
  • Posts: 128
  • I didn't do well
  • Respect: +14
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #21 on: November 12, 2018, 06:46:14 pm »
0
Crouchie and jazzycab, check your answers to Q12.

Here are counter examples:

Select \(\vec{a}=-\vec{b}\).
They are parallel, but \(0=|\vec{a}+\vec{b}|\neq |\vec{a}|+|\vec{b}|=2|\vec{a}|\).

Select \(\vec{a}=(1, 0)\) and \(\vec{b}=(0, 1)\).
They are perpendicular but, \(\sqrt{2}=|\vec{a}+\vec{b}|\neq |\vec{a}|+|\vec{b}|=2\).
I think I chose A for the Q. Whats correct?
2018: English [???] | Methods [???] | Specialist [???] | Physics [???] | Chemistry [???]
2019: ???

AlphaZero

  • MOTM: DEC 18
  • Forum Obsessive
  • ***
  • Posts: 352
  • \[\Gamma(z)\Gamma(1-z)=\frac{\pi}{\sin(\pi z)}\]
  • Respect: +160
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #22 on: November 12, 2018, 06:48:32 pm »
0
Sorry all! Excuse my stupidness. \(p\Rightarrow q\) does not necessarily mean \(q\Rightarrow p\). Whoops...
2015\(-\)2017:  VCE
2018\(-\)2021:  Bachelor of Biomedicine and Mathematical Sciences Diploma, University of Melbourne


DinWell

  • Trendsetter
  • **
  • Posts: 128
  • I didn't do well
  • Respect: +14
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #23 on: November 12, 2018, 06:52:46 pm »
0
Sorry all! Excuse my stupidness. \(p\Rightarrow q\) does not necessarily mean \(q\Rightarrow p\). Whoops...
Which was the correct ans? They have different ones  :(
2018: English [???] | Methods [???] | Specialist [???] | Physics [???] | Chemistry [???]
2019: ???

mzhao

  • Trailblazer
  • *
  • Posts: 33
  • Respect: +5
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #24 on: November 12, 2018, 06:55:17 pm »
0
Which was the correct ans? They have different ones  :(

It appears as if there is no correct answer then, unless they imply the two vectors go in the same direction when they say "parallel", as opposed to antiparallel.
2016: Algorithmics [48 + Premier's Award]
2017: Biology [46], Methods [50 + Premier's Award]
2018: Physics [50], Specialist [50 + Premier's Award]
2019: Chemistry [40], English [42], English Language [44], UMEP Mathematics [5.0]
ATAR: 99.95

DinWell

  • Trendsetter
  • **
  • Posts: 128
  • I didn't do well
  • Respect: +14
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #25 on: November 12, 2018, 06:57:07 pm »
0
It appears as if there is no correct answer then, unless they imply the two vectors go in the same direction when they say "parallel", as opposed to antiparallel.
Oh no! What a waste of time lmao. I spent like 2 and a half minutes on that question  :'(
2018: English [???] | Methods [???] | Specialist [???] | Physics [???] | Chemistry [???]
2019: ???

popcorndudette

  • Adventurer
  • *
  • Posts: 11
  • Respect: 0
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #26 on: November 12, 2018, 06:58:47 pm »
+1
6e) 146.51? instead of 146.52

When you sub in 146.51 you get 0.049... so you still reject. 146.52 gives p-value of 0.05.... so answer is 146.52

joon

  • Fresh Poster
  • *
  • Posts: 2
  • Respect: 0
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #27 on: November 12, 2018, 07:02:27 pm »
0
Does anyone have a copy of the question booklet?

DinWell

  • Trendsetter
  • **
  • Posts: 128
  • I didn't do well
  • Respect: +14
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #28 on: November 12, 2018, 07:03:41 pm »
0
Does anyone have a copy of the question booklet?
We're not allowed to upload here due to copyright issues.
2018: English [???] | Methods [???] | Specialist [???] | Physics [???] | Chemistry [???]
2019: ???

AlphaZero

  • MOTM: DEC 18
  • Forum Obsessive
  • ***
  • Posts: 352
  • \[\Gamma(z)\Gamma(1-z)=\frac{\pi}{\sin(\pi z)}\]
  • Respect: +160
Re: Specialist Maths (Exam 2): Discussion, Questions & Potential Solutions
« Reply #29 on: November 12, 2018, 07:05:53 pm »
+2
It appears as if there is no correct answer then, unless they imply the two vectors go in the same direction when they say "parallel", as opposed to antiparallel.

No, you made the same mistake as I did! The answer is A. The question asks us: If p, then q? and gives us 5 options for q. We do NOT require "If q, then p" to be also true.
2015\(-\)2017:  VCE
2018\(-\)2021:  Bachelor of Biomedicine and Mathematical Sciences Diploma, University of Melbourne