# Carrotsticks' Extension 1 HSC 2013 Solutions (1 Viewer)

#### Carrotsticks

##### Retired
Note, it'll take a bit longer than usual because I'm on my laptop, not on the desktop at home, so please bear with me =)

##### Well-Known Member
fauuuuuur good guy carrotsticks.

#### AnimeX

##### Member
Note, it'll take a bit longer than usual because I'm on my laptop, not on the desktop at home, so please bear with me =)
Thanks Carrot!!

#### Lanxal

##### New Member
Time to rock and roll. Our gratitudes, carroty! =D

#### Carrotsticks

##### Retired
Nearly done with Q14! On the very last part now. After that, checking solutions.

#### lijincheng

##### New Member
For that simple harmonic motion question, rather than proving by a=n^2x, i integrated it and expressed it in the form of Asin(nt+w) would i still get the mark? :L

#### kimjuliana

##### Member
I rearranged it to the form v^2= n^2[(a^2-(x-c)^2], where a is amplitude and c is centre of motion... Not sure if this makes it SHM though...

#### Recondit

##### ヽ(" `Д´)ﾉ
Carrotsticks = legend

#### Carrotsticks

##### Retired
Solutions are up!

#### Carrotsticks

##### Retired
Checking through my solutions, I see I made a small error on the parametrics. Quickly fixing that up now =)

Done =)

#### lijincheng

##### New Member
Q 12 c is to the nearest minute

#### andybandy

##### Member
for 13b)ii) i knew what to do but i wasn't getting the equation out right! ahhh!

#### Locus

##### Member
14biii) Would you lose any marks if you didn't show n=1,2,3 ... but did all the other steps, if so how many?

#### Makematics

##### hwpo13
fml sillies again

#### SpiralFlex

##### Well-Known Member
^ Which is why a good night of sleep can make all the difference.

#### AnimeX

##### Member
I rearranged it to the form v^2= n^2[(a^2-(x-c)^2], where a is amplitude and c is centre of motion... Not sure if this makes it SHM though...
I did this aswell, is it alright?