ext maths (1 Viewer)

[Vampire]

does anyone else have to do proofs??
i cant find anything on it in any textbook and i cant do them.

 

[Xayma]

Yes everybody has to do proofs in maths, including possibly in the HSC.

You wont find answers in the textbook because by proving them you can tell if you have the answer or not.

 

[queenie]

Originally posted by Vampire
does anyone else have to do proofs??
i cant find anything on it in any textbook and i cant do them.

the proofs are explained in all textbooks i have (maths in focus, cambridge) and u only need 2 know the proofs if you are doing ext 1.

 

[velox]

damn fitzpatrick

 

[hyperbole]

Originally posted by wrx
damn fitzpatrick

Yeah. In one of the exercises, it asks us to graph something, but it doesn't provide us with the answers, so we have no way of telling whether or not we are doing it correctly

 

[stamos]

Originally posted by queenie
the proofs are explained in all textbooks i have (maths in focus, cambridge) and u only need 2 know the proofs if you are doing ext 1.

that's induction proofs

trig proofs are a feature of the 2 unit maths course

 

[queenie]

i was actually talking about general proofs, for example; proofs of the sin and the cos rule, proofs of the midpoint formula, stuff like that, not induction and trig proofs...

knowing the proofs that i stated above is 3U

 

[eling]

Originally posted by queenie
the proofs are explained in all textbooks i have (maths in focus, cambridge) and u only need 2 know the proofs if you are doing ext 1.

yep cambridge is good
wats maths in focus like? i thought that was a crap txtbook

 

[hyperbole]

My school doesn't use fitzpatrick, but I bought it anyway. Math in Focus is good with explanations. The explanations are really easy to understand

 

[JamiL]

proof are nessesary in trig always, eg u are required to know the proof for dy/dx = ln e or log x (base other than e) etc... n i almost certain its a 2u thing not jus 3u

 

[JamiL]

sorri i ment ln x

 

[fi_babezy]

Originally posted by Vampire
does anyone else have to do proofs??
i cant find anything on it in any textbook and i cant do them.

I haven't read right through this thread, but the coroneos book that we use has the proofs (for circle geometry at least)

...I don't think you have to memorise the proofs to theorems.

 

[fi_babezy]

Originally posted by hyperbole
My school doesn't use fitzpatrick, but I bought it anyway. Math in Focus is good with explanations. The explanations are really easy to understand

UH, maths in focus is the book that we were originally assigned...personally i think you'd be better prepared for exams if you used a different textbook. The questions from the parts we worked from were fairly easy...actually very easy hence the upgrade (at least in my mind) to the older but much wiser coroneos book.

 

[queenie]

Originally posted by fi_babezy
I haven't read right through this thread, but the coroneos book that we use has the proofs (for circle geometry at least)

...I don't think you have to memorise the proofs to theorems.

well, i KNOW that u have to know the proofs to theorems for the hsc, go look up the syl

 

[fi_babezy]

NOooooOOOOoooooOOOOooooOOOOOoooo...
ok im over that, so we have to be able to prove theorems eh?

 

[Xayma]

Ive been asked to prove that tangents from a common point are equal for circle geometry. And that is a common rule used.

 

[queenie]

Originally posted by fi_babezy
NOooooOOOOoooooOOOOooooOOOOOoooo...
ok im over that, so we have to be able to prove theorems eh?

def, BUT ONLY IF U DO 3U, u dnt need 2 know them for 2U exams.

 

[Vampire]

im talking about proofs like
given
a,b,c>0
a-2b>0
b-2c>0
prove that
a+3b-9c>0

 

[Sheehan16]

i gotta do proofs but we don hav to memorise em:
our maths teacher jus shows us cause he respects the mathmaticians who strived for those thereoms

 

[Sheehan16]

ey Vampire like ur Avatar...............Sephiroth RULEZ