Login

Search the forums now!

Welcome, Guest. Please login or register.

November 08, 2025, 05:14:56 am
Pages: [1] 2   Go Down

Author Topic: Interesting practice  (Read 1503 times)  Share 

0 Members and 1 Guest are viewing this topic.

Martoman

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1476
  • Respect: +11
Interesting practice
« on: September 27, 2010, 07:36:43 pm »
0
For those interested in some exam 1 practice, this was handed to me recently. I thought it pertinent to the course given how easy last years was.

Evaluate:
Logged
2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
___________________________________
Swedish meal time all the time

ghadz7

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 246
  • Respect: +1
Re: Interesting practice
« Reply #1 on: September 27, 2010, 07:42:30 pm »
0
0.5 ?
Logged
[2009]
Methods [46]
[2010]
English; Chemistry; Physics; Further; Specialist; UMEP Maths
[2011]
Architecture

Martoman

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1476
  • Respect: +11
Re: Interesting practice
« Reply #2 on: September 27, 2010, 07:45:08 pm »
0
yep :P
Logged
2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
___________________________________
Swedish meal time all the time

ghadz7

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 246
  • Respect: +1
Re: Interesting practice
« Reply #3 on: September 27, 2010, 07:45:56 pm »
0
Sweet, I still remember Methods from last year! :)
Logged
[2009]
Methods [46]
[2010]
English; Chemistry; Physics; Further; Specialist; UMEP Maths
[2011]
Architecture

vea

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1099
  • Respect: +29
  • School Grad Year: 2011
Re: Interesting practice
« Reply #4 on: September 27, 2010, 07:46:34 pm »
0
I worked it out by evaluating 0.5log(_____)^2

Is there a faster way?
Logged
2011: ATAR 99.50
2012: Bachelor of Biomedicine, UoM
2015: Doctor of Dental Surgery, UoM

brightsky

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3136
  • Respect: +200
Re: Interesting practice
« Reply #5 on: September 27, 2010, 07:47:13 pm »
0


Let

Then







(reject negative solution)

That means,
Logged
2020 - 2021: Master of Public Health, The University of Sydney
2017 - 2020: Doctor of Medicine, The University of Melbourne
2014 - 2016: Bachelor of Biomedicine, The University of Melbourne
2013 ATAR: 99.95

Currently selling copies of the VCE Chinese Exam Revision Book and UMEP Maths Exam Revision Book, and accepting students for Maths Methods and Specialist Maths Tutoring in 2020!

the.watchman

  • Victorian
  • ATAR Notes Superstar
  • ******
  • Posts: 2526
  • Respect: +10
Re: Interesting practice
« Reply #6 on: September 27, 2010, 07:49:48 pm »
0
Yep, good :)
Nice exam 1 question!
Logged
Remember, remember the 5th of November

2010 - MM CAS (47) - Cisco 1+2 (pass :P)
2011 - Eng - Phys - Chem - Spesh - Latin - UMAT
ATAR - 99.00+ plz... :)

Feel free to PM me for anything :D

Martoman

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1476
  • Respect: +11
Re: Interesting practice
« Reply #7 on: September 27, 2010, 08:01:27 pm »
0
yeah brightsky knows what he's doing
Logged
2009: Math methods: 50, Psychology: 44
2010: chem 47, further 48, Spesh 49 fml seriously and other yr 11 subs.
2011: Holidaying, screw school.
No. Not azn.
___________________________________
Swedish meal time all the time

Sunny10

  • Victorian
  • Trendsetter
  • **
  • Posts: 169
  • Respect: +6
Re: Interesting practice
« Reply #8 on: September 27, 2010, 11:29:53 pm »
0
is it worrying that brightsky's explanation totally lost me?
Logged

iNerd

  • Guest
Re: Interesting practice
« Reply #9 on: September 28, 2010, 09:42:30 am »
0
Quote from: Sunny10 on September 27, 2010, 11:29:53 pm
is it worrying that brightsky's explanation totally lost me?
At Y12 yh....? Y11 no? I'm in Y10 doing methods tutoring and I could follow that. Basically he's made the brackets an 'x' and found 'x' in an easier form [ root 10 ] then subbed it back into the expression log10 root10 is now a simple log expression to solve [ MM 1/2 knowledge ].
Logged

itolduso

  • Victorian
  • Trendsetter
  • **
  • Posts: 146
  • Respect: +1
Re: Interesting practice
« Reply #10 on: September 28, 2010, 10:10:57 am »
0
10^x = v(3+v5) + v(3-v5)
(10^x)^2 = (v(3+v5) + v(3-v5))^2
10^(2x) = 10
2x = 1
x = 1/2
Logged

naved_s9994

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1412
  • Respect: +15
Re: Interesting practice
« Reply #11 on: September 28, 2010, 10:33:14 am »
0
I like that question...It is "interesting" :)
Logged
'Keep you friends close, but keep your enemies closer'

stonecold

  • Victorian
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 5335
  • Respect: +255
  • School Grad Year: 2010
Re: Interesting practice
« Reply #12 on: September 28, 2010, 10:54:22 am »
0
neat question. :)
Logged
2011-13: BBiomed (Microbiology & Immunology Major) @ UniMelb


VCE 2009'10: English 46 | English Language 49 | Chemistry 50 | Biology 50 | Further Mathematics 48 | Mathematical Methods CAS 39
ATAR: 99.85

"Failure is not when one falls down but rather when one fails to get up" - unknown

8039

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 437
  • Respect: +1
Re: Interesting practice
« Reply #13 on: September 28, 2010, 01:55:23 pm »
0
I multiplied log10 by 2 to get log10(10) which would be equal to 1

Then to make it what it were before times both sides by by 1/2 to get log10(sqrt(10)) = 1/2

The only kinda tricky part is realizing all the stuff in the log equals 10 when squared  :-\

« Last Edit: September 28, 2010, 01:59:04 pm by 8039 »
Logged

Sunny10

  • Victorian
  • Trendsetter
  • **
  • Posts: 169
  • Respect: +6
Re: Interesting practice
« Reply #14 on: September 30, 2010, 12:11:00 am »
0
Quote from: iNerd on September 28, 2010, 09:42:30 am
Quote from: Sunny10 on September 27, 2010, 11:29:53 pm
is it worrying that brightsky's explanation totally lost me?
At Y12 yh....? Y11 no? I'm in Y10 doing methods tutoring and I could follow that. Basically he's made the brackets an 'x' and found 'x' in an easier form [ root 10 ] then subbed it back into the expression log10 root10 is now a simple log expression to solve [ MM 1/2 knowledge ].

sigh oh, ive always been a humanities kid, ahh the shame
Logged
Pages: [1] 2   Go Up