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General Thoughts: Mathematics Extension 2 (4 Viewers)

LandCo

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Last years paper was way easier.
I swear man.
Fml.
Laters unsw :\
 

mreditor16

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Dw bro. Ur good. What do u think you got /100?
not sure yet, will wait for Carret's solutions and then will post my prediction in the "predict your mark thread"
 

BiasedBuffalo

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I got wrecked, probably something in the 70s. I thought the start was much harder than most of the past papers, and they skipped the classic giveaways like roots of unity, induction etc.
 

QZP

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for 13cii) I said that if PQ is tangential to hyperbola at M then gradient of PQ = gradient of tangent at M. And then I showed that. Is this a valid "proof"? Will I lose marks for bad style?
 

Carrotsticks

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for 13cii) I said that if PQ is tangential to hyperbola at M then gradient of PQ = gradient of tangent at M. And then I showed that. Is this a valid "proof"? Will I lose marks for bad style?
That isn't valid because you showed that PQ is parallel to the tangent, but it doesn't necessarily touch the hyperbola.
 

gahyunkk

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That isn't valid because you showed that PQ is parallel to the tangent, but it doesn't necessarily touch the hyperbola.
What if u also have mentioned that PQ has a midpoint M thus PQ passes through M?
 

QZP

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That isn't valid because you showed that PQ is parallel to the tangent, but it doesn't necessarily touch the hyperbola.
But it's given that M is the midpoint of PQ and also M lies on the hyperbola from (i)
 

Carrotsticks

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What? They told you this? Oh dear I didn't read the question, that's fine then =)
 

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