Specialist Mathematics Examination 2 discussion

[Stick]

Not hard per se, but would be "less accessible" such as the d²N/dt² one (which I screwed up too). Like the method isn't hard, implicit diff both sides and sub in dN/dt and other relevant stuff, but a lot of the people in my class couldn't get that question.

So actually I meant that I went bad coz I made silly errors so glad I had 10min at the end to double check and found a few (had N=mg at one point... lol =\) but from the general vibe of my class was that they felt it was a harder exam.

Actually I kinda liked it haha coz there was a nice balance with a lot of straight forward accessible problems. MC was pretty nice too

God dammit, that's it! I knew that method! It stumped me once before. Oh well. XD

[randomposter]

Wonder how many kids will miss both lines on the complex diagram? I only put y=x

[Professor Polonsky]

What did you guys sketch for |z+zbar|=|z-zbar| ?

[Stick]

Wonder how many kids will miss both lines on the complex diagram? I only put y=x

Yeah, I did that too. >_<

[jeff.]

What did you guys sketch for |z+zbar|=|z-zbar| ?

I did y=x and y=-x, not sure if right. :/

[Alwin]

God dammit, that's it! I knew that method! It stumped me once before. Oh well. XD

Haha, exactly (no offence stick, I feel your pain). That's what I mean by "hard" qs on this exam, no method-wise, just getting started.

Wonder how many kids will miss both lines on the complex diagram? I only put y=x

I think VCAA deliberately asked us to solve that z⁴ question hoping we'd realise that all four solns were in the intersection so there should have been two lines... thankfully I realised that in reading time.

My condolences to everyone who missed the y=-x one, maybe vcaa's attempt at being a bit sneaky

PS: anyone else having to spam the "post" button since everyone is posting en mass? lol...

[duquesne9995]

I didn't finish!  Did anyone else find it long?

[jeff.]

Not hard per se, but would be "less accessible" such as the d²N/dt² one (which I screwed up too). Like the method isn't hard, implicit diff both sides and sub in dN/dt and other relevant stuff, but a lot of the people in my class couldn't get that question.

Oh god. I didn't think of that! Welp, oh well.

[Stick]

I think there's only one other thing I know for sure I stuffed up (not including silly errors). For the question where we had to calculate how far the skier slid before stopping on the ramp, I got 11.6m, when the ramp was only 10m long. XD

[Lejn]

I forgot the second line and got the wrong angle for my vectors (I'm assuming I lost the mark in the previous question, because yeesh). I haven't checked the rest and I won't, but I felt pretty comfortable. I quite enjoyed the phone question.

I think there's only one other thing I know for sure I stuffed up (not including silly errors). For the question where we had to calculate how far the skier slid before stopping on the ramp, I got 11.6m, when the ramp was only 10m long. XD

I had this, then I realised my friction and gravity were in opposite directions, which they shouldn't have been.

[jeff.]

It didn't actually state it was 10m long iirc. Although, I think I got 9.1...

[fridge]

Found this exam fairly difficult, definitely more than most previous years, although perhaps it was just exam conditions. Multi choice were not as straightforward as usual and of course a few tricky bits in the short answer. Happy that I made an attempt at everything though.

[Stick]

It didn't actually state it was 10m long iirc. Although, I think I got 9.1...

Yeah I think that was right. Also I think I may have stuffed up how long the person was in the air before the water. I got 2.03s, but I heard many got roughly ~2.3s or something. Other than that, I should be OK.

[Will T]

I think there's only one other thing I know for sure I stuffed up (not including silly errors). For the question where we had to calculate how far the skier slid before stopping on the ramp, I got 11.6m, when the ramp was only 10m long. XD

Stick I got 83m for that question, you win (and I knew at the time it was horribly wrong). (Same with me though, it's only thing I think I stuffed up excluding miscellaneous errors).

[randomposter]

Yeah I think that was right. Also I think I may have stuffed up how long the person was in the air before the water. I got 2.03s, but I heard many got roughly ~2.3s or something. Other than that, I should be OK.

2.03 is right.