Junior Cert 2011 : Maths Paper 2

Desire. · 12-06-2011 03:10PM

JC2011girl wrote: »

Can anyone give me a brief description of the different questions for example
Q6- statistics? Thanks

If you're looking for the different type of questions that are asked just look at your exam papers?

JC2011girl · 12-06-2011 03:15PM

Oh and a quick question about P1, for Q6b ii) I got 4.5 and 2.5 when the answr was -4.5 and 2.5.. How many marks do you think I'll lose for getting the wrong sign?

Slow Show · 12-06-2011 03:17PM

Alternative (and imo, easier) version of Pythagoras:

Procrastination has reached new levels...:o and if you can't read my writing, sorry, that took a huge effort to make it as neat as it is, it's usually almost incomprehensible

EDIT: Oh jesus, that's massive...

King John The Last · 12-06-2011 03:21PM

Thats a hell of a lot shorter than our version, thanks.

Desire. · 12-06-2011 03:21PM

JC2011girl wrote: »

Oh and a quick question about P1, for Q6b ii) I got 4.5 and 2.5 when the answr was -4.5 and 2.5.. How many marks do you think I'll lose for getting the wrong sign?

A blunder, three marks.

Colm! · 12-06-2011 03:38PM

In case you can't read Slow Show's handwriting, I did up this. I've never seen the Alternate Proof before, but it's so easy compared to the one in the textbook. Totally could have used it last year.

EDIT: and yup, (a+b), not (ab) :P

JC2011girl wrote: »

Oh and a quick question about P1, for Q6b ii) I got 4.5 and 2.5 when the answr was -4.5 and 2.5.. How many marks do you think I'll lose for getting the wrong sign?

At most three marks. Possibly one, depending on how you made the mistake. It's all down to how you made it in the solution and the discretion of the examiner. But it's a really, really, really small amount of marks.

buyer95 · 12-06-2011 03:50PM

Is that a totally acceptable method?

robz18 · 12-06-2011 03:52PM

buyer95 wrote: »

Is that a totally acceptable method?

yeah, definitely

buyer95 · 12-06-2011 04:00PM

Colm! wrote: »

In case you can't read Slow Show's handwriting, I did up this. I've never seen the Alternate Proof before, but it's so easy compared to the one in the textbook. Totally could have used it last year.

EDIT: and yup, (a+b), not (ab) :P

What you mean a+b not(ab)

Colm! · 12-06-2011 04:04PM

Slow Show wrote (ab) instead of (a+b), which kind of changes an entire part of it. So I changed it back when I was typing it out.

scipsss · 12-06-2011 04:11PM

thats great thanks for explaining

what number theorem is that ?

DessieMG · 12-06-2011 04:16PM

Slow Show wrote: »

Alternative (and imo, easier) version of Pythagoras:

Procrastination has reached new levels...:o and if you can't read my writing, sorry, that took a huge effort to make it as neat as it is, it's usually almost incomprehensible

EDIT: Oh jesus, that's massive...

that's what she said

Desire. · 12-06-2011 04:20PM

scipsss wrote: »

thats great thanks for explaining what number theorem is that ?

Number ten.

her0fire · 12-06-2011 04:27PM

Can anybody PLEASE explain to me what axial symmetry, central symmetry, rotatio and translations are please? Refer to 2007 P2 Q 3 b ii please! Thanks

Slow Show · 12-06-2011 04:37PM

Errrr I meant to say (a+b)... >.>

imtryan · 12-06-2011 04:52PM

Is ANYONE else doing the project maths paper

Desire. · 12-06-2011 04:59PM

imtryan wrote: »

Is ANYONE else doing the project maths paper

I believe Indiego is.

KaBooom · 12-06-2011 05:05PM

her0fire wrote: »

Can anybody PLEASE explain to me what axial symmetry, central symmetry, rotatio and translations are please? Refer to 2007 P2 Q 3 b ii please! Thanks

Axial symmetry is when an image is mirrored through an axis eg. flipped from left to right.

central symmetry is when an image is brought through 1 point so it becomes flipped up-side down.

rotation is when an image is turned by a number of degrees in a certain direction.

translation is when an image is moved a certain distance but it remains exactly the same.

In regards to the question;

A: axial symmetry
B:central symmetry
C:rotation 90 degrees clockwise.

Hope this helps, cant guarantee its all correct since this is from my own memory, and I learned it in tech graph (dont remember ever seeing this in maths!)

her0fire · 12-06-2011 05:16PM

KaBooom wrote: »

Axial symmetry is when an image is mirrored through an axis eg. flipped from left to right.

central symmetry is when an image is brought through 1 point so it becomes flipped up-side down.

rotation is when an image is turned by a number of degrees in a certain direction.

translation is when an image is moved a certain distance but it remains exactly the same.

In regards to the question;

A: axial symmetry
B:central symmetry
C:rotation 90 degrees clockwise.

Hope this helps, cant guarantee its all correct since this is from my own memory, and I learned it in tech graph (dont remember ever seeing this in maths!)

You won't believe how much this helped.
Thanks alot man!

KaBooom · 12-06-2011 05:27PM

her0fire wrote: »

You won't believe how much this helped.
Thanks alot man!

no problem bro

juncert · 12-06-2011 05:37PM

Thats really helpful Kaboom thanks

KaBooom · 12-06-2011 05:41PM

haha, no bothers, glad it helped yas out

dieselbabe · 12-06-2011 05:41PM

TheRedDevil10 wrote: »

These are the ones that will most likely come up
A diagonal bisects the area of a parallelogram

The measure of the angle at the centre of a circle is twice the measure of the angle at the circumference, standing on the same arc

If two sides of a triangle are equal in measue, then the angles opposite thes sides are equal in measure

The measures of the three angles in a triangle add up to 180'

A line through the centre of a circle, perpendicular to a chord, bisects the chord

are you sure they'll come up? how do you kno?

:) im completely stressing out:eek:

dieselbabe · 12-06-2011 05:43PM

stressing out about theorems! my teacher told me that the theorem *if two triangles are equiangular...* might come up as its the last year its in the course..i hope to god shes wrong:L

KaBooom · 12-06-2011 05:47PM

Join the club, im useless at the theorems and am hoping TheRedDevil is right with the theorems cuz they're the only ones im going to learn :L .. a few of them should come up since they havent been up for a few years

Desire. · 12-06-2011 06:13PM

dieselbabe wrote: »

stressing out about theorems! my teacher told me that the theorem *if two triangles are equiangular...* might come up as its the last year its in the course..i hope to god shes wrong:L

I think she's wrong. I mean, maybe she just made a mistake. Next year's Junior Certs will be doing the same course as us, so I doubt they would take it off in the final year?

Indiego · 12-06-2011 06:18PM

Desire. wrote: »

I believe Indiego is.

No, im not XD

mattol58 · 12-06-2011 06:32PM

It really is a great day for studying those Theorems, How many marks do I need to pass Paper 2 in Maths, I'm pretty confident I did well in Paper 1, but I'm rubbish at Paper 2 and would just like to know before going in the minimum marks to get for a pass in Paper 2.

Desire. · 12-06-2011 06:44PM

mattol58 wrote: »

It really is a great day for studying those Theorems, How many marks do I need to pass Paper 2 in Maths, I'm pretty confident I did well in Paper 1, but I'm rubbish at Paper 2 and would just like to know before going in the minimum marks to get for a pass in Paper 2.

120 Marks.

shadowninty · 12-06-2011 06:50PM

Oh God this will be awful

Junior Cert 2011 : Maths Paper 2

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