Maths Paper one definitions

Leaving Cert Student · 03-06-2013 8:59am #1

Are there anry definitions that can asked for paper 1? I feel like I'm missing something...

LostBoy101 · 03-06-2013 9:07am

Ordinary or Higher?

Leaving Cert Student · 03-06-2013 9:11am

Higher though I am going to be very ignorant and suggest that ordinary is merely a subset of higher?

and to be even more arrogant... a subset is a venn diagram reference...

... jk!!

peekachoo · 03-06-2013 10:06am

Probably just "define an irrational number" I can't think of anything else!

Leaving Cert Student · 03-06-2013 10:48am

peekachoo wrote: »

Probably just "define an irrational number" I can't think of anything else!

Aye thats all I can think of myself?

LostBoy101 · 03-06-2013 11:09am

Leaving Cert Student wrote: »

Higher though I am going to be very ignorant and suggest that ordinary is merely a subset of higher?

and to be even more arrogant... a subset is a venn diagram reference...

... jk!!

Don't get all smart ass on me now.

11Charlie11 · 03-06-2013 11:57am

peekachoo wrote: »

Probably just "define an irrational number" I can't think of anything else!

What definition would you give? Like I know how to prove it and construct it

ItsCon · 03-06-2013 11:58am

"Cannot be written in the form A/B when A,B are elements of Z" is the simplest one really

11Charlie11 · 03-06-2013 12:00pm

ItsCon wrote: »

"Cannot be written in the form A/B when A,B are elements of Z" is the simplest one really

That it? :O I was thinking it had to be long with the amount of room they leave in the exam paper!

ItsCon · 03-06-2013 12:02pm

11Charlie11 wrote: »

That it? :O I was thinking it had to be long with the amount of room they leave in the exam paper!

Nope that's it! Think they only leave so much room to either confuse people or just in case somebody keeps messing up and has more room to write in.

outnumbered · 03-06-2013 12:13pm

How do you construct it?

peekachoo · 03-06-2013 12:22pm

outnumbered wrote: »

How do you construct it?

root 2; you have a line of 1 unit, and label both ends a + b. Draw a perpendicular line up from b and label it m. Use your compass as measure the length of a-b and draw a circle with b as your centre, where the circle intersects M label it C.
Draw a line from a-c and that's root 2

Root 3; start with the same line a-b, this time draw a circle with centre A, and another with centre B (same size- 1 unit)
Where the two circles intersect above and below, mark off points and label them C + D. You can draw lines from A-C, A-D and B-C, B-D and that's root 3

outnumbered · 03-06-2013 12:26pm

peekachoo wrote: »

root 2; you have a line of 1 unit, and label both ends a + b. Draw a perpendicular line up from b and label it m. Use your compass as measure the length of a-b and draw a circle with b as your centre, where the circle intersects M label it C.
Draw a line from a-c and that's root 2

Root 3; start with the same line a-b, this time draw a circle with centre A, and another with centre B (same size- 1 unit)
Where the two circles intersect above and below, mark off points and label them C + D. You can draw lines from A-C, A-D and B-C, B-D and that's root 3

Thanks a million

Maths Paper one definitions

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