# Search results

1. ### Calculus sketch question

hey guys, having trouble with this one: y=x + 4/(x-1) i have found 1st and 2nd derivatives. Minimum turing point at (1/2, 15/4) and there are no points of inflexion. there is an asympote at x=1...right. This line is more than just that though isn't it? how can u tell that you got...
2. ### Price Elasticity of Demand and Supply in Sharemarket

Hey everyone, just wondering if there is any way that price elasticity of demand and supply can be measured in the sharemarket? thanks for your help

" the height "h" meters of a cricket ball after being struck by a batsman is given by the equation h=1+x-(x^2/40) where x meters is the horisontal distance traveled by the ball from the bat. how far would the ball travel before it hits the ground?" I have: using pythagoras...
4. ### Physics wave question

Hi, i'm stuck with this question, I'm prob missing something easy. the "c" above middle c on the piano has a frequency of 512 Hz. calculate the wavelength. Thanks for your help
5. ### Sine Function

hi, i was wondering why the sine function makes a squiggly line on the number plane. i know its not the right terminology so sorry for that. thanks
6. ### Solve the system x+y=9, x^2 - y^2 = 36 for x and y

is that it? i did y^2-x^2=36 (x-y)(x+y)=36 (x-y)(8)=36 x-y=36/8 is any of that correct?
7. ### Solve the system x+y=9, x^2 - y^2 = 36 for x and y

Hi, i just sat my maths exam, and i had a very strange question... i don't know how to do it... x+y=8 x^2-y^2=36 find the values for x and y Thanks
8. ### Prove triangle PQS is similar to triangle QRS

yer, but how can u prove that they triangles are similar?
9. ### Prove triangle PQS is similar to triangle QRS

I'm having trouble doing this... prove triangle PQS is similar to triangle QRS Hence prove QS^2=PS.SR the diagram is attached cheers
10. ### How do rationalise {(plusminus)2(sqrt)2/(sqrt)3}

your not supposed to have a square root on the bottom are you?
11. ### How do rationalise {(plusminus)2(sqrt)2/(sqrt)3}

fermat is correct the plusminus 2 belongs to the root 2
12. ### Algebraic Fraction

hmmm, maybe the answer is wrong... it says {2(9x^2+4)}/(3x-2)(3x+2)
13. ### Algebraic Fraction

is that with a plus in between the fractions?
14. ### Algebraic Fraction

nice...it does...how about it with a plus instead of a multiply between the two factions
15. ### Math puzzle.

how did u get there?
16. ### Algebraic Fraction

ummm nar... this is what i can get to... {(3x+3)(2x-2)/(2x+3)(3x+2)} + {(3x+2)(x-2)/(3x-2)(x-2)} and the answer is... {2(9x^2+4)}/(3x-2)(3x+2) i just don't know how to get there haha
17. ### How do rationalise {(plusminus)2(sqrt)2/(sqrt)3}

how do rationalise this? {(plusminus)2(sqrt)2/(sqrt)3} ALL MINUS 2
18. ### Algebraic Fraction

yer, but what is left is nasty haha and its wrong
19. ### Algebraic Fraction

hey, I am having trouble with the following... (6x^2+5x-6)/(6x^2+13x+6) TIMES (3x^2-4x-4)/(3x^2-8x+4) i can factorise them but i don't know what to do after that... Thanks for your help

21. ### I think i have lost my brain

its -6 and 2 isn't it? gosh I'm a fool sometimes :rofl:
22. ### I think i have lost my brain

sorry this is such a stupid question...but i have been sitting her for half an hour trying to solve it. what does a^2-4a-12 factorise to?
23. ### Letters to Numbers?

yer....got that

.....1?
25. ### Letters to Numbers?

sorry, i just wrote it down, agree-got it
26. ### Letters to Numbers?

yer, kinda...
27. ### Letters to Numbers?

arildno, yes, got it now. Whats next?
28. ### Letters to Numbers?

SEND=s*1000+e*100+n*10+d*1 i would have thougt it would have been s*1000+e*100+n*10+d

sorry, lost
30. ### Letters to Numbers?

Letters to Numbers? Hey, I have no idea how to do this... Replace all the letters with the respective digits in such a way that the calculation is correct SEND+MORE=MONEY the answer is 9567+1085=10652, but i don't know how to get there. Thanks for your help
31. ### Problem Solving

Hey everone... I'm in year 10 and my problem solving skills have been perished in the time that i haven't been doing much of it. Can you guys recommend any books to things that i could do to get my skills back but to par? Thanks for your time
32. ### Square of 9

g'day everyone... i was wondering the significance of Mr Gann's square of nine, and how he could just find this "magical" thing and then apply it to the markets... Also, what is the mathematics behind it? I've looked it up on google but it doesn't have anything about either of these...
33. ### Functions and other maths

I'm in year 10 at the moment, but i was wondering where the best place to start was if i wanted to do some extra work on functions and other maths... Thanks
34. ### Fractals, Chaos and Non-linear Dynamics

he says stuff like, "with this mathematics, things that we never though possible to predict now can be. e.g. cloud formations" also, he is trying to predict "sentiment" in a way. "all the current methods of prediction do the same thing, try to predict what one person is going to do, but...
35. ### Introducing LaTeX Math Typesetting

is there any way to produce a numberplane using LaTeX? or anythin simialir?
36. ### Easy question

got it :approve: thanks for that...
37. ### Easy question

wow...i'm totally lost...sorry, could u explain that?...thanks... :bugeye: :confused:
38. ### Easy question

cool, cheers...
39. ### Easy question

i saw it under "lim" and it was pointing to infinity...what does it mean there?
40. ### Easy question

sorry, this might seem like a stupid question for all you, but I'm only in year 10. When you this symbol \rightarrow in the middle of an equation, what does it mean? Thanks
41. ### Fractals, Chaos and Non-linear Dynamics

ok, so i imput the past into the magical black box formulae to predict the future? would anything else be needed? like probability ect...?
42. ### Fractals, Chaos and Non-linear Dynamics

hmm well excuse my language but this actually is a correct term for traders. a "big swinging dick" is a person who is famous for their trading, and are so closley watched, every thing they do is copied and therefore has an effect on the market. the main forces on the market are supply and...
43. ### Fractals, Chaos and Non-linear Dynamics

in the movie "the bank" a mathematical genius predicts the exact movements of the sharemarket after years of research and attempts. he uses Fractal geometry, chaos theory, non-linear dynamics and of special interest to him was the work of mandelbrot and his work regarding fractals. He...
44. ### The Big Bang: Matter Creation & Photons

so.. so matter was just, made after "phlanks minute" (sorry about spelling)? Can Photons turn into matter?
45. ### Black holes

our universe? could our universe be in a black hole? Could the "Big Bang" have occurred from the possible "singularity" inside a black hole. Also, i know that light can't get out, but can light get in?
46. ### The Big Bang: Matter Creation & Photons

I was reading some stuff about the big bang and about the singularity. When the big bang happens, is a whole lot of matter just created? And, Are Photons counted as matter? Thanks
47. ### Black holes

If black holes suck all matter into a singularity, where does it go and what does it do from there?
48. ### When did time begin?

time http://en.wikipedia.org/wiki/Planck_epoch