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HSC 2012: Maths Extension 2 Maths Extension 1 Modern History Economics Chemistry English Advanced

i thought this was still 3U, and it was only 4U when it involved other graphs like ellipses and hyperbolas :/

English - Done all the Mod B speeches and linking them all together MX1 - Polynomials MX2 - Pretty much done conics, graphs next Economics - Summing up the global economy, will start on next topic next week Chemistry - Finishing off acidic environment, not sure what topic is next Modern...

your first term is 40cm .'. a = 40 your last term is 30cm .'. l = 30 the sum of the lengths of your rungs is 5.25m, or 525cm therefore 525 = n/2*[a+l] = n/2*[30+40] =35n .'.n=15 .'. 15 rungs

but the question asked for the domain -a<=x<=a, so they should be filled-in circles. sorry, don't know how to use latex :/ anyway, my teacher was away today and I got a substitute, but a lot of my friends who are smarter than me suggested drawing a curve that was continuous for all real x and...

Yeah, I'm probably gonna ask him tomorrow, just before my 2 unit assessment lol

Yeah, I think that's the only way, but the marking guidelines [it's from my school's past paper] say that the answer is "Any continuous smooth curve with endpoints at x=a and x=-a", and 1 mark is awarded for "clearly indicated endpoints". That kind of threw me off, is it saying that the curve...

Hey guys, Draw a sketch of a possible curve that is differentiable in the domain -a<=x<=a How would you sketch this, if the endpoints of a curve aren't differentiable? Would you have a continuous curve and then just mark the points x=a and x=-a, and make the part in between those values...

finished a couple of assessments so far, got 2 unit maths tomorrow and chem on friday, but still won't be done...got another 2 weeks before it's all over

not entirely sure if this is right (i) the probability of getting a card of one suit initially is 1, and since the card isn't replaced, the probability of the second card being a different suit is (13*3)/51 = 13/17 (three different suits to choose from each with 13 cards divided by 1 less...

MX2 English Advanced Chemistry Economics Modern History no one in my school does the same combination as me, although i imagine it wouldn't be that uncommon...

i thought that if you helped the rest of your cohort push the ranks up and more closely together then it'd benefit you anyway, so even if everyone else does better and your rank may drop, the fact that everyone is doing well will be more beneficial than having the ranks spread far apart [and of...

thanks for the estimates everyone :D haha, looks like i've got a bit of work to do next year

hey, these are my yr 11 ranks, and i know things can change, but i wanna know what kind of atar i'd get if these were the ranks i got in yr 12 english advanced - 93/166 maths extension 1 - 2/127 maths 2 unit - my school doesn't have 2 unit ranks for people doing 3 unit in yr 11 but i'm...

lol, that is quite questionable: there's definitely a few potential 99.95ers, but if you're referring to the whole cohort, there are quite a few underachievers...but then again, that might change given that it's yr 12 now

ohh i see, thanks for the help! i'm still having trouble with sketching them though...not really sure where to start

hey all i've just started 4unit this week and so far we've done some work on ellipses and hyperbolas, but there's this question that i have trouble with: find the equations of each of the following conics. sketch each curve. a) focus (3,5), directrix 2x+y-4=0, eccentricity 1/3 b) focus...

either ratio can be negative; either -3:2 or 3:-2 but both can't be negative i.e. -3:-2

Aesytic Doing 4u maths, advanced english, modern history, chemistry and economics for yr 12 ATAR aim: 95+

hey i'm just wondering, what's the difference between destructive and non-destructive chemical reactions, and would the dissolution of ammonium nitrate in water be destructive or non-destructive?