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HSC Extension 2 Mathematics Predictions / Thoughts (3 Viewers)

Fabrizio

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Haha, yeah probably. Same thing happened with sciences last year I believe actually.


See I find that strange, because I have done plenty of other trial exams and I found the sample paper more challenging compared to them. I guess I'm just better at a different sort of question?
I suck at proofs and some of the harder complex number stuff and it wasnt that bad in the sample but some of the past papers i have done have so much of it
 

erucibon

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will any ext 1 content. overlap into the ext2
exam
Yes but not a big part of the exam. For example, pigeonhole principle as a sub question is very much possible (sample paper).
 
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Speed’o’sound Sonic

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So anyone have predictions for the hardest couple of questions? Hopefully 11-14 are 'filler' types cause 15 + 16 are gonna hit hard haha
 

Speed’o’sound Sonic

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Does anyone think there will be a forced complex substitution for integration in 14 or 15? I think it would make an interesting question and might separate those who have studied more from those who haven't
 

Trebla

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Does anyone think there will be a forced complex substitution for integration in 14 or 15? I think it would make an interesting question and might separate those who have studied more from those who haven't
Not sure how an integration question with a given substitution can really separate those studied vs those who haven’t?
 

Speed’o’sound Sonic

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Not sure how an integration question with a given substitution can really separate those studied vs those who haven’t?
Complex substitution man like being forced to solve integral of sin^5(x) via separating into terms of e^ipi. I’ve seen it maybe 3 or 4 times in trials and miscellaneous questions so it’s fairly rare.
 

Drdusk

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Not sure how an integration question with a given substitution can really separate those studied vs those who haven’t?
Yeah this.

They tried this in 2014 and it kinda came to bite them back.
 

Xanthi

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Complex substitution man like being forced to solve integral of sin^5(x) via separating into terms of e^ipi. I’ve seen it maybe 3 or 4 times in trials and miscellaneous questions so it’s fairly rare.
If they "force" you to use a certain method they must provide enough details for you to discern what the method is, and then it becomes easier (e.g they cannot say using complex numbers integrate etc)
 

Trebla

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Complex substitution man like being forced to solve integral of sin^5(x) via separating into terms of e^ipi. I’ve seen it maybe 3 or 4 times in trials and miscellaneous questions so it’s fairly rare.
Unlikely going to happen because the syllabus only covers integration over real numbers. You start to run into rigour issues (e.g. how do you account for the fact that ordering does not exist for complex numbers like it does for real numbers?) that need to be established first when integrating over the complex number system, which makes it outside the scope of the syllabus and reserved for university courses in complex analysis.
 

shashysha

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That block one in the sample paper i was sure my solution was wrong but it was right haha

it just seemed so informal haha
Yeah I was working it out and it seemed so wrong lol but I guess thats why its a miscellaneous type question since its more logical rather than methodical
 

MrGresh

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Yeah I was working it out and it seemed so wrong lol but I guess thats why its a miscellaneous type question since its more logical rather than methodical
I mean thinking back on it, it makes perfect logical sense.

But when youre so used to doing it algebraically it just feels... wrong.
 

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