I am bored (1 Viewer)

[lyounamu]

If you post up a paper, I will give the solution for that paper for you (despite my lack of general maths knowledge).

 

[danal353]

If you post up a paper, I will give the solution for that paper for you.

this is just a question but if I was asked to find the area bounded by a parabola and a straight line and that area was below the x-axis, do I still just do it the same way?

 

[lyounamu]

this is just a question but if I was asked to find the area bounded by a parabola and a straight line and that area was below the x-axis, do I still just do it the same way?

top - bottom. yes

 

[danal353]

top - bottom. yes

but wouldn't it turn out to be negative?and what if it also crossed over the y-axis

 

[lyounamu]

but wouldn't it turn out to be negative?and what if it also crossed over the y-axis

Nope, it actually doesn't matter whether the graph goes below the x-axis when you just try to find the area between them.

 

[danal353]

Nope, it actually doesn't matter whether the graph goes below the x-axis when you just try to find the area between them.

oh ok. thanks =D

 

[lyounamu]

oh ok. thanks =D

Have a go at that question and tell me if I am right. As far as I am aware, it doesn't matter.

 

[danal353]

it's an HSC paper so I don't have answers =( ... but you're probably right

 

[lyounamu]

it's an HSC paper so I don't have answers =( ... but you're probably right

Which question is this? I might have a go. Good old 2 unit maths....

 

[meilz92]

i have a maths question!


how come i only got 3/12 on Q10 of the 2007 HSC??
from Q5-9 i got 12/12 for each.... and then Q10 comes along... 3/12.... WTF?!


is it just me or was that a REALLY hard Q10? i think i got like 9/12 for the 2008 Q10...


do u reckon 2moro's question 10 is going to be THAT hard?
if it is i will die.

 

[zazzy1234]

If you post up a paper, I will give the solution for that paper for you (despite my lack of general maths knowledge).

so says the 1 who came 1st i 2u lol

 

[ehtefaz.hedayet]

so says the 1 who came 1st i 2u lol

habib

 

[lyounamu]

i have a maths question!


how come i only got 3/12 on Q10 of the 2007 HSC??
from Q5-9 i got 12/12 for each.... and then Q10 comes along... 3/12.... WTF?!


is it just me or was that a REALLY hard Q10? i think i got like 9/12 for the 2008 Q10...


do u reckon 2moro's question 10 is going to be THAT hard?
if it is i will die.

It's all different to individuals I guess.

Personally I thought it was 2008 < 2007. 2007 Q10 was okay. It wasn't overally difficult. But it was heaps of algebra which threw many students.

2008 Q 10 on the other hand was very fairly straightforward and easy. I guess that's why you got 9/12.

I really reckon u should try other Q10s like 2000 or 2003 or 2006 ones. They are considered hardest.

 

[meilz92]

I really reckon u should try other Q10s like 2000 or 2003 or 2006 ones. They are considered hardest.

i dont like this pattern at all:

2000, 2003, 2006....

the common difference is three...

so whats the 4th term in the series... 2009

eep!

 

[ashllis92]

but wouldn't it turn out to be negative?and what if it also crossed over the y-axis

Like Namu said, crossing the y-axis is no problem however if it crosses the x-axis and you're trying to find the total shaded area you will need to do it as two definite integrals taking absolute values, then just add.

 

[lyounamu]

i dont like this pattern at all:

2000, 2003, 2006....

the common difference is three...

so whats the 4th term in the series... 2009

eep!

LOL! I didn't see that coming...
Good luck

 

[meilz92]

thanks... dear god ill need it! *cries*