random tips/hints (1 Viewer)

[Rahul]

anything, that you may think is something to look for that has been recurring over the years.

also, any relevant results that are used or can be helpful, please post.

i'll try to keep a list going on the first post. mods, feel free to edit in anything aswell.

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-be aware of those common ineqalities results for harder 3 unit, they are often easy marks to pick up in questiion 8, they are in numerous past papers

-alot of people are unaware, or are not taught that stoopidly hard long proof of accelaration around a circle or sumthin wierd like that, where u use delta's and tangent of a circle, i cant remember it but i remember our teacher saying thjey can test it and havent done so for awhile. 1989 paper had that in it somewhere. Fitzpatrick book has a proof - should probably look at it then

-When doing partial fractions, you can always compare powers.

 

[freaking_out]

i think, that drbuchanan/oldman, will have a lot to say about hsc exams.

 

[freaking_out]

Originally posted by drbuchanan
I'm drunk on Grange Hermitage again

Oldman wants my job and I'm about to be sacked from Taylors.

Maybe he can run my website in future.

I give up.

no, we need u to hang in there for 3 more weeks...don't leave us on such late stage of the game.


btw, what are u speculating about this years hsc paper?

 

[Dumbarse]

be aware of those common ineqalities results for harder 3 unit, they are often easy marks to pick up in questiion 8, they are in numerous past papers

alot of people are unaware, or are not taught that stoopidly hard long proof of accelaration around a circle or sumthin wierd like that, where u use delta's and tangent of a circle, i cant remember it but i remember our teacher saying thjey can test it and havent done so for awhile

 

[freaking_out]

Originally posted by Dumbarse
...alot of people are unaware, or are not taught that stoopidly hard long proof of accelaration around a circle or sumthin wierd like that, where u use delta's and tangent of a circle, i cant remember it but i remember our teacher saying thjey can test it and havent done so for awhile

yeah, they did ask that in one of the past papers...so thats why i made a point of learning the proof.

 

[underthesun]

When doing partial fractions, you can always compare powers. That sometimes makes things easy..

there goes my 2 cents. Didn't drbuchanan speculate about riemann hypothesis appearing in 2003 paper?

 

[Fosweb]

Originally posted by Dumbarse
alot of people are unaware, or are not taught that stoopidly hard long proof of accelaration around a circle or sumthin wierd like that, where u use delta's and tangent of a circle, i cant remember it but i remember our teacher saying thjey can test it and havent done so for awhile

1989 paper had that in it somewhere. Fitzpatrick book has a proof - should probably look at it then

 

[Rahul]

Originally posted by underthesun
When doing partial fractions, you can always compare powers.

?
you mean powers of the numerator and denominator?

and how the denominator is "spread" over the new fraction? *sorry cant think :mad1:*

 

[felix_js]

Originally posted by Rahul
?
you mean powers of the numerator and denominator?

and how the denominator is "spread" over the new fraction? *sorry cant think :mad1:*

instead of subbing x=2 x=0 etc, you expand the Rhs and compare with coeffs of the Lhs so you get a couple of easy simultaneous equations

 

[freaking_out]

Originally posted by felix_js
instead of subbing x=2 x=0 etc, you expand the Rhs and compare with coeffs of the Lhs so you get a couple of easy simultaneous equations

or u can use terry lee's mental decomposition method for partial fractions.

 

[Rahul]

Originally posted by felix_js
instead of subbing x=2 x=0 etc, you expand the Rhs and compare with coeffs of the Lhs so you get a couple of easy simultaneous equations

sorry, but i have absolutely no idea, what you mean

is there an example? in a book maybe?
edit: never mind....i got it.
i thought you were talkign about the stage when you decide how to initially break up the fraction...

 

[freaking_out]

Originally posted by Rahul
sorry, but i have absolutely no idea, what you mean

is there an example? in a book maybe?

i think he's just saying to equate coefficients when doing partial fractions.

 

[Rahul]

yeh i thought he was talking about somethign else...
ohh...i get what underthesun was saying before.
*shouldnt have drank tonite*

okay can someone answer this question...

say we have P(x)/Q(x), what are the different ways to approach writting out the RHS?
for eg: for a squared factor of x, yo right, a + b/(sqaured factor of x) or somethign along those lines.....

 

[underthesun]

Originally posted by drbuchanan
underthesun, the Riemann Hypothesis is the most difficult problem in all of mathematics, so I therefore speculate that if teachers can't even handle third derivative that the Riemann Hypothesis won't be in the exam.

Oh ok. Do you think they'll mention anything with pisquared on 6 again this year?

 

[Affinity]

oh don't think so.. maybe ln(2) this time? or did that appear before?

the Gamma function?

so harder polynomial question?

I would love a geometry Q 8 though

 

[Fosweb]

What's the "Gamma function"?

It seems De Moivre's + Polynomials + Sums/Products of roots comes up a fair bit in q8.

Also something like 1996 Q7B would be cool: estimation of k! using Trap. rule and integral of ln(x)

 

[ND]

I'll be happy with any harder 3u + complex numbers - probability.

 

[underthesun]

Woah, thanks for the info

i'll take a look at those.. too bad I'm not allowed to drink, got G6PD deficiency syndrome...

looks like I'm gonna be spending way more time in maths than other subjects, even though scaling has less effect in the higher marks... Damn scaling!

 

[Affinity]

What new question could they possibly conjure out of the riemann zeta?

Fosweb:

gamma(x) = integral {0-> infinity} t^(x-1)*e^(-t) dt

it turns out that
gamma(x) = (x-1)!

 

[freaking_out]

Originally posted by drbuchanan
....4 unit maths (and that's why Bill Pender isn't very good at it).

lol, thats why u have his inservice on ya website.