Cssa mx2 (1 Viewer)

dragons6666x

New Member
Joined
Nov 2, 2009
Messages
2
Gender
Male
HSC
2011
Lol you mean question 8

1-5 hopefully did ok,
6 onwards was just scary
 

Chambalam

Member
Joined
Jul 12, 2010
Messages
109
Gender
Male
HSC
2011
Got it all until i hit that induction (6). Got 4/5 of the rest of the parts out, except for that weird numbers question...

Think i got about 8/15 on question 8! it wasn't as bad as some of the past trials thank god!
 

Chambalam

Member
Joined
Jul 12, 2010
Messages
109
Gender
Male
HSC
2011
With the pairs of numbers

a^2 + b^2 + c^2 = (a + b + c)^2 - 2(ab + bc + ac)

And also



Using x + y + z = 5 (or whatever it was)

y + z = 5 - x

If you sub them in for each of the brackets, and expand, you get something which you can sub in the original equations for
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
Lol you mean question 8

1-5 hopefully did ok,
6 onwards was just scary
I found the paper all right. standard difficulty.

also, anyone know how to do the tent one ? there isn't a height to integrate.
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
Got it all until i hit that induction (6). Got 4/5 of the rest of the parts out, except for that weird numbers question...

Think i got about 8/15 on question 8! it wasn't as bad as some of the past trials thank god!
i found the induction all right. just shift a few number and substitute the given rule.
 

Chambalam

Member
Joined
Jul 12, 2010
Messages
109
Gender
Male
HSC
2011
I found the paper all right. standard difficulty.

also, anyone know how to do the tent one ? there isn't a height to integrate.
Since it was formed on a circle, the height was 2

r^2 + h^2 = 4

r = 2 (radius of the things), therefore height is 2 when the radius is 0 (at the centre point)
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
q.6 was retarded i got zero for it
what's question 6 ? tent ?

Since it was formed on a circle, the height was 2

r^2 + h^2 = 4

r = 2 (radius of the things), therefore height is 2 when the radius is 0 (at the centre point)
oh i see. thank you :D

edit : oh wait. isn't 2 is the side of the tent ? not radius ?
 
Last edited:

Deep Blue

Member
Joined
Dec 17, 2010
Messages
150
Gender
Male
HSC
2012
I thought the paper wasn't too bad; the only real problem I had was I ran out of time so I skipped questions seven.
 

Pitah

New Member
Joined
May 20, 2011
Messages
9
Gender
Male
HSC
2011
i thought question 6 was quite simple, circle geometry was really simple except for the last part where you had to prove the two lines were perpendicular

the tent one was simple, it told u in the question that the tent was in the shape of a semi-circle and each "re-entrant"(i think thats wat they called it) was an equilateral triangle (but it has a curved side) therefore

then u have the radius of 2m, then u do the integration which i cant remember :D

question 8 part (a) was easy as well, just rearranging shit
 

woga21

Banned
Joined
Aug 8, 2011
Messages
17
Gender
Undisclosed
HSC
N/A
It was so easy I managed to do two 4unit papers in the time given !
 

Omnipotence

Kendrick Lamar
Joined
Feb 7, 2009
Messages
5,327
Location
Sydney
Gender
Male
HSC
2011
Uni Grad
2016
^ Great, if you get less than 120 - YOU FUCKING FAILED!
 
Joined
Apr 3, 2010
Messages
777
Gender
Male
HSC
2011
for me, questions 1 - 5 were awesome.

questions 6 and 7 were difficult, as those exposed all the topics im horrid at.

question 8 was pretty good, expecting 7-8 from it, but didnt get time to finish it all >.<
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top