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lol i love the: "i know i can do it, and you can do it too - WE CAN DO IT!!......can i do it?" mentality... priceless

post up ur results ppl!!!

1). now we need to manipulate this: (1/x)+1/(x+2)=2 -----> X CANNOT = 0 OR -2 (NOT IN DOMAIN) (x+2)+x=2x(x+2) 2x+2=2x^2 + 4x 2x^2+2x-2=0 x^2+x-1=0 NB/// (1/x)+1/(x+2)=2 IS NOT THE SAME AS x^2+x-1=0 HOWEVER, THEY HAVE THE SAME ROOTS: use quadratic formula, and u...

uh, make the function: x^3-9 = 0 d/dx = 3x^2 EDIT = just saw vds700's post - and he's spot on!

maybe i'm wrong but the science co-ordinator at my skool went to an inservice thing at sydney uni and got some sheets they gave him, which he forwarded to us, which apaprently contains what the latest understanding of cooper pairs are - they say that contrary to many textbooks, cooper pairs of...

dude, sometimes these are 1 mark,a dn they just want the answer my advice if u cant do it: put ut calculator in radians punch in 0.0001, and hit the '=' button then in this case punch in: (1-cos(2(ans)))/((ans)^2) and bam, u get it!!!! same thing for limits approaching infinity, sub...

i know of three people in my year who dont get tutored at all but are coming top 3 in all their subjects (1st for most of them) - so yeh, u dont need tutoring to go well i don't believe in tutoring, personally, just sit at home AND DO IT, honestly, ive learnt the majority of the physics...

yeh i was readin bout this at university level - dont actual cooper pairs travel in opposite directions (our current understanding)?

can confirm, CSSA is 2morrow, afternoon session

uh, pretty easy - imcomplete combustion, results in a lower heat of combustion!!

yes, general maths with ur simpson's rule on your formula sheet and ur x amount of multiple choice....

uh, no - 4U students dont sit the 2U paper - only the 3U paper and the 4U paper, bothj of which count towards 2 units for HSC (2+2=4 units), 2U counts for nothing cause we dont sit it When i say imagine the 4U paper, there is a separate 4U paper...just imagine...

now imagine a 4U catholic trial....

but arent art and drama 'practical' subjects where u have a major work that also gets marked, or a performance? im just sayin, 2.5 just sounds wierd btw 2hour 3 unit test is apparently really time pressing; even more than 4U, or so they say

lol 4U for me; was surprised General was 2.5 hours - shot for a 2U subject...

2010 i believe

uh, 3unitz, shouldnt it be ' -85sin15 ' in the first line????

Got it ok use delta(Y) = ut + 0.5*a*t^2 now, i'm gonna set it up as follows: delta(Y) = -70 u=-85sin(15) a=-9.8 sub in: -70 = -85sin(15)t -0.5*9.8*t^2 re arrange 4.9t^2 + 85sin(15)t - 70 = 0 treat as a quadratic in t (to avoid gettin messy, im gonna take 85sin(15)...

draw their structures, show they are both non polar (ethanol has one end non polar), write they will interact via dispersion forces and thus will dissolve i rekon 1 mark = proper lewis/electron diagrams or full srtuctural formula the 2nd mark for an INDICATION (visually or written) that they...

2-hydroxypropane-1,2,3-tricarboxilic acid should be the answer, commonly known as citric acid, or C6H8O7 - it is triprotic as it can donate the hydrogen on EACH of its carboxilic acid functional groups (of which it has 3), as well as the fact that it is a weak acid and only aprtially oinises...