# Year 12 2013 Chit Chat Thread (1 Viewer)

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#### G0

##### New Member
What to do if you are still uncertain in what you want to do in the future?

#### SpiralFlex

##### Well-Known Member
What to do if you are still uncertain in what you want to do in the future?
List down possible areas and do lots of reading. That way, you'll get a taste before entering.

#### Sy123

##### This too shall pass
A 2 mark question:

$\bg_white \int \frac{x}{\sqrt{1-4x^2}} \ dx$

And I put in:

$\bg_white -\frac{1}{8} \sqrt{1-4x^2} + c$

by inspection, so without working out.
Would I lose a mark? Because I have come across 3 mark questions like $\bg_white \int \frac{1}{x\ln(x)^3} \ dx$ where simple inspection will finish the problem, but I don't want to lose marks for no working out :/

#### hayabusaboston

##### Well-Known Member
A 2 mark question:

$\bg_white \int \frac{x}{\sqrt{1-4x^2}} \ dx$

And I put in:

$\bg_white -\frac{1}{8} \sqrt{1-4x^2} + c$

by inspection, so without working out.
Would I lose a mark? Because I have come across 3 mark questions like $\bg_white \int \frac{1}{x\ln(x)^3} \ dx$ where simple inspection will finish the problem, but I don't want to lose marks for no working out :/
In HSC you'd lose a mark, but in school it depends on the teacher. If teacher is nice and they know u knew what u were doing they will give u full marks for the right answer by itself. In HSC, if u dont go 100 percent by the guidelines, no full marks.

COngrats on 99 in MX1 last year man, I found out recently.

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#### HeroicPandas

##### Heroic!
COngrats on 99 in MX1 last year man, I found out recently.
who told u that?

#### hayabusaboston

##### Well-Known Member
who told u that?
O it was few weeks ago, someone on BoS, cant remember who.

#### HeroicPandas

##### Heroic!
O it was few weeks ago, someone on BoS, cant remember who.
that person is very naughty

im joking

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#### hayabusaboston

##### Well-Known Member
I like tight butts and I caannot lie! U fellas can not dee ny! when a girl walks in with an itty bitty butt I something something something something BOOM

yeaaa

#### bleakarcher

##### Active Member
A 2 mark question:

$\bg_white \int \frac{x}{\sqrt{1-4x^2}} \ dx$

And I put in:

$\bg_white -\frac{1}{8} \sqrt{1-4x^2} + c$

by inspection, so without working out.
Would I lose a mark? Because I have come across 3 mark questions like $\bg_white \int \frac{1}{x\ln(x)^3} \ dx$ where simple inspection will finish the problem, but I don't want to lose marks for no working out :/
Was that in an exam bro? I think you mean (-1/4) not (-1/8).

#### RealiseNothing

##### what is that?It is Cowpea
A 2 mark question:

$\bg_white \int \frac{x}{\sqrt{1-4x^2}} \ dx$

And I put in:

$\bg_white -\frac{1}{8} \sqrt{1-4x^2} + c$

by inspection, so without working out.
Would I lose a mark? Because I have come across 3 mark questions like $\bg_white \int \frac{1}{x\ln(x)^3} \ dx$ where simple inspection will finish the problem, but I don't want to lose marks for no working out :/
You lose a mark in the HSC. I was reading the marker's general comments and they said that students should be reminded that they are marked on "mathematical reasoning" as well as their answers, which they explained meant we need to show working out to show we can explain maths logically.

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#### RealiseNothing

##### what is that?It is Cowpea
Was that in an exam bro? I think you mean (-1/4) not (-1/8).
Sy is right.

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#### Sy123

##### This too shall pass
You lose a mark in the HSC. I was reading the marker's general comments and they said that students should be reminded that they are marked on "mathematical reasoning" as well as their answers, which they explained meant we need to show working out to show we can explain maths logically.
ah ok then

#### RealiseNothing

##### what is that?It is Cowpea
You are right, nevermind my comment lol, I substituted in 'u' and had 1/8 out the front but didn't go on to evaluate the integral to notice that it is multiplied by the 2 when integrating. Sorry, my bad.

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#### bleakarcher

##### Active Member
You are right, nevermind my comment lol, I substituted in 'u' and had 1/8 out the front but didn't go on to evaluate the integral to notice that it is multiplied by the 2 when integrating. Sorry, my bad.
It's fine lol.

#### Nerd Bird

##### New Member
Hi! I'm kinda new here. :L

What's up?

#### SpiralFlex

##### Well-Known Member
Hello I am Spiral.

#### Nerd Bird

##### New Member
Hey Spiral. c:

Hahaha, it's a beautiful day...to stay inside and lurk on forums. :alone:

#### Registered User

##### Member
How can I get myself to study english and science? I spend like 70% of my time on maths I will get a terrible atar...

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