Login

Search the forums now!

Welcome, Guest. Please login or register.

January 03, 2026, 05:56:12 am
Pages: 1 ... 8 9 [10] 11 12 ... 28   Go Down

Author Topic: Bucket's Questions  (Read 57021 times)  Share 

0 Members and 2 Guests are viewing this topic.

Mao

  • CH41RMN
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 9181
  • Respect: +390
  • School: Kambrya College
  • School Grad Year: 2008
Re: Bucket's Questions
« Reply #135 on: March 16, 2008, 05:26:39 pm »
0


now it will be a lot easier :D
Logged
Editor for ATARNotes Chemistry study guides.

VCE 2008 | Monash BSc (Chem., Appl. Math.) 2009-2011 | UoM BScHon (Chem.) 2012 | UoM PhD (Chem.) 2013-2015

dcc

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1198
  • Respect: +55
  • School Grad Year: 2008
Re: Bucket's Questions
« Reply #136 on: March 16, 2008, 05:26:56 pm »
0


Swapping the x & y coordinates:







Logged

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #137 on: March 16, 2008, 06:49:28 pm »
0
ahh are those answers the same? O_O
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

Collin Li

  • VCE Tutor
  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 4957
  • Respect: +17
Re: Bucket's Questions
« Reply #138 on: March 16, 2008, 06:50:58 pm »
0


Yes (the proof is above: going from unknown's answer to dcc's answer) :)
Logged

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #139 on: March 16, 2008, 09:39:08 pm »
0
ohh thanks alot everyone!
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #140 on: March 19, 2008, 09:47:52 pm »
0
an extremely easy question.
Find of
I don't understand the part.
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

Neobeo

  • Victorian
  • Trendsetter
  • **
  • Posts: 188
  • 反逆 の Neobeo
  • Respect: +3
Re: Bucket's Questions
« Reply #141 on: March 19, 2008, 10:01:37 pm »
0
Quote from: bucket on March 19, 2008, 09:47:52 pm
an extremely easy question.
Find of
I don't understand the part.

Basically they are just limiting the domain for you, in effect simplifying the equation, since you cannot divide anything by zero. Since they let , then , so you will not be dividing by zero. This means that you can just divide the whole thing to make which should be a lot simpler.
Logged
Mathematics Coach: Tuition and Enrichment // Email/MSN:

If you remember the flying birds, they died D=

Glockmeister

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1660
  • RIP Sweet Nothings.
  • Respect: +8
Re: Bucket's Questions
« Reply #142 on: March 19, 2008, 10:15:37 pm »
0
You know, I've never thought about the in that way before. I would've had just ran straight to the quotient rule.
Logged
"this post is more confusing than actual chemistry.... =S" - Mao

[22:07] <robbo> i luv u Glockmeister

<Glockmeister> like the people who like do well academically
<Glockmeister> tend to deny they actually do well
<%Neobeo> sounds like Ahmad0
<@Ahmad0> no
<@Ahmad0> sounds like Neobeo

2007: Mathematical Methods 37; Psychology 38
2008: English 33; Specialist Maths 32 ; Chemistry 38; IT: Applications 42
2009: Bachelor of Behavioural Neuroscience, Monash University.

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #143 on: March 19, 2008, 10:39:53 pm »
0
That explains why I got that question wrong :P, thanks a lot neobeo.
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #144 on: March 20, 2008, 04:53:53 pm »
0
in a question such as the one above, how do you prove that ?
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

Collin Li

  • VCE Tutor
  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 4957
  • Respect: +17
Re: Bucket's Questions
« Reply #145 on: March 20, 2008, 06:00:48 pm »
0
Quote from: bucket on March 20, 2008, 04:53:53 pm
in a question such as the one above, how do you prove that ?

You don't prove it. It is just a specified domain. It's just telling you, do this task for the domain .
Logged

Mao

  • CH41RMN
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 9181
  • Respect: +390
  • School: Kambrya College
  • School Grad Year: 2008
Re: Bucket's Questions
« Reply #146 on: March 20, 2008, 08:27:38 pm »
0



This is a division operation, and the absolute no-no is to divide something by 0

so is undefined when



is that what you wanted to know?
Logged
Editor for ATARNotes Chemistry study guides.

VCE 2008 | Monash BSc (Chem., Appl. Math.) 2009-2011 | UoM BScHon (Chem.) 2012 | UoM PhD (Chem.) 2013-2015

AppleXY

  • Life cannot be Delta Hedged.
  • Victorian
  • ATAR Notes Superstar
  • ******
  • Posts: 2619
  • Even when the bears bite, confidence never dies.
  • Respect: +16
Re: Bucket's Questions
« Reply #147 on: March 20, 2008, 08:34:47 pm »
0
Quote from: Glockmeister on March 19, 2008, 10:15:37 pm
You know, I've never thought about the in that way before. I would've had just ran straight to the quotient rule.

Yeah, using the quotient rule is not most efficient method to diff in this case.
Logged

2009 - BBus (Econometrics/Economics&Fin) @ Monash


For Email: click here

Need a question answered? Merspi it!

[quote="Benjamin F

bucket

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1005
  • Respect: +8
Re: Bucket's Questions
« Reply #148 on: March 20, 2008, 08:35:08 pm »
0
yeah thanks mao that makes sense.
theres questions in the exercise book asking that =\
Logged
Monash University
Science/Engineering (Maths, Physics and Electrical Engineering)

Mao

  • CH41RMN
  • Honorary Moderator
  • Great Wonder of ATAR Notes
  • *******
  • Posts: 9181
  • Respect: +390
  • School: Kambrya College
  • School Grad Year: 2008
Re: Bucket's Questions
« Reply #149 on: March 20, 2008, 08:46:57 pm »
0
Quote from: AppleXY on March 20, 2008, 08:34:47 pm
Quote from: Glockmeister on March 19, 2008, 10:15:37 pm
You know, I've never thought about the in that way before. I would've had just ran straight to the quotient rule.

Yeah, using the quotient rule is not most efficient method to diff in this case.

is algebraicly equivalent to
but you need to include that in your final solution

using the quotient rule avoids having to attach this restraint, as the denominator will imply that it is the case

however, just to be safe, always state the domain of wierd looking equations =D

another thing to be careful with is differentiability... that's a whole new can of worms :P
Logged
Editor for ATARNotes Chemistry study guides.

VCE 2008 | Monash BSc (Chem., Appl. Math.) 2009-2011 | UoM BScHon (Chem.) 2012 | UoM PhD (Chem.) 2013-2015
Pages: 1 ... 8 9 [10] 11 12 ... 28   Go Up