# Search results

1. ### Online Math Tutor Tools

Hello, so I'm thinking about doing online tutoring since it's basically more convenient, but I just need a good idea of to use. So I plan to use Skype to communicate, but what tools would you guys use in order to show different workings through screen-share? Especially with writing out...
2. ### new textbook.

Hey so what textbooks would you recommend with the new Stage 6 math new syllabus (2U/3U/4U)

Alright guys I'm nearly at the end of my degree and for my econ degree, I need 2 more business elective courses. So ironically, I tend to do better in conceptual courses like math than courses that involve quite a bit of memorisation. So what would be recommended for a guy who's good at maths...
4. ### Dropping from a major to a minor

So it works like this, I'm currently studying Adv Math/ Economics at UNSW, I decided to combine my math degree with eco since it would give me better job prospects (well that's what I think) and it seemed interesting to me. However as I'm as going through halfway of eco, I'm starting to hate...
5. ### What makes someone a BAD tutor?

So I stumbled an article about good and bad tutors, but I'd like so hear some personal experiences from my fellow peers here. So have you had a terrible tutor? if so then how? I'm a tutor myself, and let's just say that greed hasn't overcome my morals.
6. ### Positive Matrix proof

$a) Prove that a Square Matrix$ \ G \ $is a positive definite if and only if$ \ G+G^T \ $is a positive definite$ $b) Prove that an$ \ n \ times \ n \ $symmetric matrix$ \ G \ $is a positive definite if and only if$ \ G^{-1} \ $is positive definite$
7. ### log base 1

Yeah sorry if this was asked before, but this just crossed my mind. y = log_1(x) \Rightarrow x = 1^y = 1 So what I'm getting is that this particular log is only defined at x = 1? But if we use the change base formula y = ln(x)/ln(1) = \frac{ln(x)}{0} We can see that it's not...
8. ### Moment Generating Function

$For any$ \ \ 0<p<1 \ \ $and$ \ \ r \ \ $a positive integer, the probability function$ \\ \\ f(x) = \binom{r+x+1}{x}p^r(1-p)^x \ \ \ x = 0,1,2 ... \\ \\ $defines a random variable X$ \\ \\ $Show that the moment generating function$ \ \ m_X(u) = \mathbb{E}(e^{ux}) = \\...
9. ### Gamma distribution function

Yeah my mind's probably not working or I'm missing something important but how do you evaluate this \frac{1}{\beta^2} \int_0^{\infty}e^{-\frac{y^2}{2\beta^2}} dy

13. ### Partial derivative question

Ok I maybe I'm derping and stuff but i can't seem to get this one $Suppose that function f is a differentiable function of a single variable and F(x,y) is defined by$ \ \ F(x,y) = \ f(x^2-y) \\ $a) Show that$ \frac{\partial F}{\partial x} + 2x\frac{\partial F}{\partial y} = 0 \\ \\ b) \ \...
14. ### Going home at 6pm

Hey guys, so I have like 3 days where i finish my last class at 6pm. The thing is, there's heaps of people crowding around the bus stop to central at that time, and it took me around 40minute to get on my bus. So just wondering, is an alternate way of getting back to central faster?
15. ### Driving Manual cars

Hey so I just got my Ls and like my mum owns a manual car (a 15 year old toyota starlett lol), while my dad owns a toyota corrola which is automatic Now the thing is my dad is mostly out at work so most of the time i could only drive my mum's manual car. I only just started learning to...

Sorry if there's already a thread like this (Ｉcan't find one like this haha) any ways post your highscore (must be legit i.e not hacks/cheats) and your thoughts about the game ahah EDIT: My best is 62
17. ### Class clashes

I don't know if there's already a thread like this, and if there is I'm sorry lols So I applied in 4 subjects under B science Maths 1141 Matsh 1081 Chem 1031 Phys 1111 Unfortunately my enrollment could not be processed because there's a clash in the lectures Maths 1081 and Chem 1031...
18. ### B science with another degree?

So I'm planning to study Bachelor of science (maths major, still deciding whether UNSW or Usyd, could you suggest which one is better) But I'm told that there are limited job opportunities with that degree itself, so therefore I should combine with something. Now I'm not really a fan of...
19. ### ATAR Estimate

Hey Guys just need a rough estimate now 2011 School Rank: around 200s 2012 School Rank : 600 (it was the worst year ever with only 1 band 6, but I'm confident this year we have a much stronger cohort) Maths Ext 1 1/12 (beating the 2nd guy by at least 15%) Maths Ext 2 2/5 (Joined classes...
20. ### Standard English dragging down my ATAR

So yeah I'm doing some of the higher scaling subjects like 4U maths and chemistry and I'm doing great with those, but I can't simply deal with english. I'm doing English standard and my rank is maybe just in the top 15 after doing pretty bad in my half yearlies. I currently attend a school that...