# 2U 2015 Discussion Thread (1 Viewer)

#### sy37

##### Active Member
I personally found q16 harder this year

thoughts?

MC was quite straight forward, got stuck on Q9

*EDIT* HAHAHAHA I DONT EVEN DO 2U!!

Hijacked by the #General#Mathematicians

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#### kenny777777

##### New Member
Walked out 15min early

#### Nyminix

##### New Member
One of them was a find the area of a function using integration

2nd one was finding the volume of the function 8ln (x-1)

Final one was a maxima/minima question I believe. Gave us a big cone, and a cylinder inside the cone. Asked us to find another expression for the cylinder, and also to find out that the volume of the cylinder would never exceed 4/9 of the volume of the cone no matter what parameters were used.

Anyways, I wanted to cry on the last one.

#### BlueGas

##### Well-Known Member
Finallllyyy maths is over!!!!

#### BlueGas

##### Well-Known Member
Guys, what was question 1? srs.

#### Nyminix

##### New Member
The MC one where you had to expression in scientific notation?
I had like 2.534 x 10^-3 or something like that.

#### Sien

##### 将来: NEET
How do you do q16 b, I just differentiated it twice then gave up

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#### thomasdo1

##### Member
How do you do q16 b, I just differentiated it twice then gave up

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I differentiated and got x = 2R/3 then sub it in and youre good, gotta prove its a max too

#### Sien

##### 将来: NEET
I differentiated and got x = 2R/3 then sub it in and youre good, gotta prove its a max too
Yea I did that too. I got up to proving it was a max then I fizzed out

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#### qwert73

##### Member
Easiest HSC test ever, apart from a few questions like the area of the triangle it wasn't hard and they gave you almost all the answers.

#### thomasdo1

##### Member
Also btw, the question with the elevator thingy going down asked for how much the ride has to go down, not how much above the ground it was

#### vflaash

##### Member
was the maximum displacement from the mc 14 or 18? I put 14 for some reason but everyone says its 18

#### tywebb

##### dangerman
Here are 2 unit solutions from John Drake from the Emanuel School. I haven't checked them though.

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#### Flop21

##### Well-Known Member
Haha good test. Bet everyone on BOS got 100% on that test, nothing really was crazy apart from the last part which may have tripped people up.

I know I definitely lost marks on some, still hoping for 80+ raw, but might be a little less depending how many dumb mistakes I made. Forgot how to find n for the loan question lol I know (I couldn't get n by itself). Couldn't do the geometry question, the similar triangles one, and couldn't find max water falling out or whatever. So those the ones I lost marks, so I dunno hopefully 80+.

It was around 70

#### Sien

##### 将来: NEET
I think I lost around 8 marks tbh ;_; fk. Could potentially lose more from silly mistakes smh

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#### BlueGas

##### Well-Known Member
Here are 2 unit solutions from John Drake from the Emanuel School. I haven't checked them though.

#### BlueGas

##### Well-Known Member
Here are 2 unit solutions from John Drake from the Emanuel School. I haven't checked them though.
I just checked multiple choice, I'm not gonna check short answers, I don't wanna stress myself out lol.

#### Catz

##### Member
Exam wasn't hard expect for the last question I got part ii but not i

Btw which previous year would aligning match I don't think it would be 2013 cause this exam was easier so 2014?