HSC 2013 Maths Marathon (archive) (1 Viewer)

[ColdLipstick]

Re: HSC 2013 2U Marathon

I know it's a very 'shonky' proof/deduction lol... How could I improve it? View attachment 28805

If I was marking this, I would give it full marks.
If you want to 'improve' it, I guess you should focus more on the fact that perfect squares cannot have a difference of 1 as that is the heart of the solution.

Well done.

 

[nerdasdasd]

Having problems with this question, so easy, but can't get the answer.

The sum of 50 terms of an arithmetic series is 249 and the sum of 49 terms of the series is 233. Find the 50th term of the series.

I used simultaneous equations to find d, and from that , I got a.

 

[RealiseNothing]

Re: HSC 2013 2U Marathon

Why is everyone using simultaneous equations to find 'd' fuck.

 

[HeroicPandas]

Re: HSC 2013 2U Marathon

 

[Menomaths]

Re: HSC 2013 2U Marathon

What topic does the parabola, vertix, directric etc come under? Can't seem to find it in my book

 

[Carrotsticks]

Re: HSC 2013 2U Marathon

What topic does the parabola, vertix, directric etc come under? Can't seem to find it in my book

The Parabola, or Parametric Equations.

 

[Menomaths]

Re: HSC 2013 2U Marathon

The Parabola, or Parametric Equations.

Is that in Fritzpatrick?

 

[Sy123]

Re: HSC 2013 2U Marathon

 

[Carrotsticks]

Re: HSC 2013 2U Marathon

lol what's with you and functional equations recently?

 

[Carrotsticks]

Re: HSC 2013 2U Marathon

Is that in Fritzpatrick?

Not too sure tbh. Don't have it on me atm.

 

[Sy123]

Re: HSC 2013 2U Marathon

lol what's with you and functional equations recently?

I've got secret insider information into the contents of the exams next week








and I'm trying to sabotage you all

 

[Carrotsticks]

Re: HSC 2013 2U Marathon

wat

 

[Trebla]

Re: HSC 2013 2U Marathon

What topic does the parabola, vertix, directric etc come under? Can't seem to find it in my book

In the syllabus it falls under 'The Quadratic Polynomial and the Parabola'

 

[SpiralFlex]

Re: HSC 2013 2U Marathon

Reading linear algebra?

 

[SpiralFlex]

Re: HSC 2013 2U Marathon

ITT: 50% 3 unit questions

Not really 3U but requires a bit of foresight and experience.

 

[Menomaths]

Re: HSC 2013 2U Marathon

In the syllabus it falls under 'The Quadratic Polynomial and the Parabola'

Found it

Damn this looks scary considering I've never seen this topic of maths before

 

[Menomaths]

Re: HSC 2013 2U Marathon

 

[Klaymen]

Re: HSC 2013 2U Marathon

Sorry if I make mistakes with the editing and such, I'm a noob on this website - as you can probably tell by my attempt at using


or
But is undefined,
Therefore


A nice question I saw in a textbook (not sure if textbook questions are allowed here; it's from SK Patel's book):

If (alpha) and (beta) are the roots of
,
find the equation whose roots are (alpha) - (beta) and (beta) - (alpha).

 

[mahmoudali]

Re: HSC 2013 2U Marathon

y=ln(x) mad bro?

 

[Carrotsticks]

Re: HSC 2013 2U Marathon

y=ln(x) mad bro?

Why would he be mad, considering that is one of the obvious choices?