4 unit mathematics brahs! Get in here! (1 Viewer)

[RealiseNothing]

Lol i had shm tides question in my trial, my teacher even said he got it straight from cambridge and changed the numbers but i highly doubt shm will come up. My prediction is 10 marks of mechanics, including a reisted motion and a conical pendulum. Dont think there will be much harder 3u considering that they went into overdrive with it last year (like 30 or so marks out of 100 were harder 3u)

The test is supposed to have 30 marks of harder 3U.

 

[anomalousdecay]

Until everyone starts getting 80%+ raw in 4u, board of studies has no reason to make it any harder haha. It may seem easy, but B6 cutoff is ~67/100 so that indicates ppl are still finding questions in 4u difficult. But if its easy then why complain! lol all the more chance of getting high 90's overall in MX2 Though on an ATAR calculator I checked the effect on ATAR of going from 92 to 99 in 4u, the ATAR difference is 0.10 or 0.15 or something. While 85-90 in english advanced is 0.85 atar change. -_-

That's because around 35% get an e4 in 4-unit. Only 10% get b6 in english. A 70 in ext2 will only change an ATAR by around 2 if it were an e4 instead.
A 90 in English could probably give a 5 ATAR boost compared to a 70.

These are all just guestimations though.

 

[RealiseNothing]

They haven't put proving e and pi irrational for a long time. So I'm guessing that might show up this year. (btw what part of the syllabus asks 4u students to prove pi and e irrational)

You can't just rote learn the proofs for maths rofl

 

[anomalousdecay]

You can't just rote learn the proofs for maths rofl

True. You can only generalise a method to approach and if it doesn't work, then use another method.

 

[seanieg89]

What did you get when you marked your 2007 paper. 30% of that test was either 3-unit or non-existent HSC maths
That's why that was my highest mark lol.
And the questions were not even harder 3-unit cause they weren't even application of series or induction questions or else I would've done bad.
I haven't even touched harder 3-unit series in a textbook but they are still alright in difficulty.

Unfortunately, that was my year...

 

[Sy123]

True. You can only generalise a method to approach and if it doesn't work, then use another method.

The only thing similar between all irrationality proofs ive seen for e and pi is let it equal p/q, everything else is completely different

 

[anomalousdecay]

Unfortunately, that was my year...

Why unfortunately?

 

[seanieg89]

Why unfortunately?

A difficult exam would have suited me better ranking-wise (as well as being more fun).

 

[anomalousdecay]

The only thing similar between all irrationality proofs ive seen for e and pi is let it equal p/q, everything else is completely different

I think there was one were it said to use the limits in the previous question. I never really understood the p/q method so I just used that
e = Infinite sum of (1/n!) which isn't approved and is probably a zero anyways. There was one in 2003 which was just taking the infinite limit.

 

[seanieg89]

I think there was one were it said to use the limits in the previous question. I never really understood the p/q method so I just used that
e = Infinite sum of (1/n!) which isn't approved and is probably a zero anyways. There was one in 2003 which was just taking the infinite limit.

And how did you use: e = Infinite sum of (1/n!) to deduce irrationality?

 

[anomalousdecay]

Did anyone find the 2009 exam a bit harder than the rest? I could only scab 1 mark in the last question.
The Extension 1 exam for 2009 also seemed a bit harder than the rest for some reason.

 

[RealiseNothing]

A difficult exam would have suited me better ranking-wise (as well as being more fun).

lol crazy

 

[RealiseNothing]

Did anyone find the 2009 exam a bit harder than the rest? I could only scab 1 mark in the last question.
The Extension 1 exam for 2009 also seemed a bit harder than the rest for some reason.

2009 was one of the easier question 8's for me.

 

[anomalousdecay]

And how did you use: e = Infinite sum of (1/n!) to deduce irrationality?

Take a look at 2003. I wasn't very clear in my post. Last question uses a previous part.

 

[anomalousdecay]

2009 was one of the easier question 8's for me.

I looked at the probability question and just closed up my test paper.
The areas question was a bit easier though.

 

[seanieg89]

lol crazy

Finding it fun or the logic behind it suiting me better? I think a harder exam is a better means of comparison in general.

 

[hayabusaboston]

2009 was one of the easier question 8's for me.

2009 Q8 was in relative terms easier than other papers I agree, 8 c) was potentially a challenge for most ppl though, the W=p+q^w one or something liek that.

 

[twinklegal19]

You can't just rote learn the proofs for maths rofl

~challenged accepted~

 

[anomalousdecay]

2009 Q8 was in relative terms easier than other papers I agree, 8 c) was potentially a challenge for most ppl though, the W=p+q^w one or something liek that.

Maybe I just had a bad day or something.

Will make sure I do that paper again soon.

 

[RealiseNothing]

Finding it fun or the logic behind it suiting me better? I think a harder exam is a better means of comparison in general.

No I agree with a harder exam being more fun/better suiting.

It's that you said "it would have been better rank-wise" considering what rank you got anyway.