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wikipedia should have some info...

it might be quiker not to square,. because the the numerator AND the denomenator are both positive, since they are both absoulte values. Then you could take cases. But yeh your method is fine.

in terms of normal school chemistry lessons, i dont think there is enough time for your teacher to cover 2 topics in depth. your gonna have to either do holiday/after school lessons, or do it in depth on your own.

lol looks like the Board of Studies comes on these forums. By 'part of a campaign to disclose raw marks' i think they (exaggerating the situation of course) mean he [dp] (and many others, including myself) posted on threads which had to do with the topic of guesstimating Raw Marks OR showing...

exactly that, the latter is per unit length, ie l is taken to be 1 (which is why on the formula sheet for HSC it is given as 'f/l = ...), wherease the former is the force on the wire, in which case a specific length must be stated in the Q.

Re: I screwed up my half yearlies lol easy guys, no need to turn this thread into personal attacks

could u upload the paper to share wiht the rest of us? ill try to get to it later PS. don't get too angry if your question isn't answered in 1 hour, or even 3 hours give it at least a day.

well: -if u like maths, then u wouldnt mind studying it at school OR at uni (which u will if u do engineering) -MX2 WILL increase your UAI if you do well in it, but if you want to get engineering, you'll only need a UAI in the 80's,s o consider whther u need to boost your UAI - in any case, it...

just get whatever UAI ur gonna get and whatever u wanna do, do a double degree with Science, majorring in mahematics eg engineering/science, commerce/science, arts/science, science/law, etc... or just do science majoring in maths and something else

u should know by know the pH is related to [H+] (concentration of H+), which not only depends on the acid or base (ie its strength), but also its concentration. Therefore, a better question would be: "i was jst wanderin can anyone tell me the pH of 1 mol/L Garden lime. i know its basic but...

In your course you conducted a first-hand investigation to compare the reactivates, in bromine water, of an appropriate alkene and its corresponding alkane. (a) Identify the dependent variable in your investigation (1 mark) (b) Name and draw the structural formula for the alkene used in...

i know eh, im begining to hate LaTex - sure it looks great and neat, but takes too long

why is there a women's room, and no men's room? seems sexist to me...

(1-x^{2})^{n} = (1+x)^{n}(1-x)^{n} using the binomial theorem: \binom{n}{0} + \binom{n}{1}(-x^2) + \binom{n}{2}(-x^2)^2 + ... + \binom{n}{n-1}(-x^2)^{n-1} = \left [\binom{n}{0} + \binom{n}{1}x + \binom{n}{2}x^2 + ... + \binom{n}{n-2}x^{n-1} + \binom{n}{n}x^n} \right ]\left [\binom{n}{0} -...

i think thats just if your travelling from epping to macquarie uni if you're going from strathfield to macquarie uni, the fare wont be more than an extra 20 cents or something than just going to epping. 8:28 train on Newcaste line from strathfield to epping ---> 11 minutes (arrives 8:39)...

i dont know what ur on about... all u do is add (k+1)^4 to both sides, then u have the LHS u want - u dont need to do anything else here. All you need to do is show that 1/30 x k(k+1)(2k+1)(3k^2+3k-1) + (k+1)^4 is equal to 1/30 x (k+1)[6k^4 + 39k^3 + 91k^2 + 89k + 30)] which is...

you dont need to... plus its not an infinite series

yeh just read it and was going to post about it, but got beaten to it lol subsidising train travel for students sounds good :)

u can change now cant u....

yeh sounded familiar, but wasn't sure.