• Want to help us with this year's BoS Trials?
    Let us know before 30 June. See this thread for details
  • Looking for HSC notes and resources?
    Check out our Notes & Resources page

Year 11 2014 Chat :) (3 Viewers)

Status
Not open for further replies.

hasanke

New Member
Joined
Mar 16, 2014
Messages
1
Gender
Male
HSC
2016
does ancient history stay the same as year 11 like archaeological and learning about rocks and stuff?:vcross:
 

Crisium

Pew Pew
Joined
Feb 17, 2014
Messages
2,010
Location
Australia
Gender
Male
HSC
2015
Justem is the answer to that question -3 < x < 1

I did it without graphing (#yolo) so it's probably wrong but it would make sense if it were actually an answer because of the identity:

l f (x) l < a

-a < f (x) < a

^ Idek the f (x) is meant to equal the value in the modulus and so on...

I just use this identity from the Cambridge Book then again I probably got it wrong because I didn't graph it, I'm sick and feeling really derpy atm :/
 
Last edited:

GolfGirl97

back from the dead
Joined
Feb 26, 2013
Messages
300
Location
on the moon
Gender
Female
HSC
2015
does ancient history stay the same as year 11 like archaeological and learning about rocks and stuff?:vcross:
omg i am so glad i dropped ancient. i dropped it the first day back :') i got the syllabus for it and i was like...ewwww..
 

lavender1001

Active Member
Joined
Feb 17, 2014
Messages
319
Location
Parramatta
Gender
Female
HSC
2015
Justem is the answer to that question -3 < x < 1

I did it without graphing (#yolo) so it's probably wrong but it would make sense if it were actually an answer because of the identity:

l f (x) l < a

-a < f (x) < a

^ Idek the f (x) is meant to equal the value in the modulus and so on...

I just use this identity from the Cambridge Book then again I probably got it wrong because I didn't graph it, I'm sick and feeling really derpy atm :/
The answer is x>1 and x <-3. I posted a pic on how to do it if u r interested. :)
 

lavender1001

Active Member
Joined
Feb 17, 2014
Messages
319
Location
Parramatta
Gender
Female
HSC
2015
That's what I got :L
I believe the reason why u guys are getting that answer (x> 1 and x>-3) is because u are just multiplying the 2x up but that's wrong because u don't know whether x is positive or negative. If it's negative the sign would change. So like soulful said, you need to multiply both sides by the square of the denominator because squaring a number always makes it positive.
 

Tazayneem

Member
Joined
Feb 12, 2014
Messages
66
Gender
Female
HSC
2015
I believe the reason why u guys are getting that answer (x> 1 and x>-3) is because u are just multiplying the 2x up but that's wrong because u don't know whether x is positive or negative. If it's negative the sign would change. So like soulful said, you need to multiply both sides by the square of the denominator because squaring a number always makes it positive.
Ohhhhhhhh
Yeap that's where I went wrong :p
Is this part of 2U or 3U maths ?
 

Tazayneem

Member
Joined
Feb 12, 2014
Messages
66
Gender
Female
HSC
2015
Definitely 3u maths. If u go back I posted an image of how to do the question (if u really, desperately want to know how to do it). :)
I saw how you did it and I was so confused... Lol.. You're so smart! I was sorta praying that wasn't 2U maths :D
 

lavender1001

Active Member
Joined
Feb 17, 2014
Messages
319
Location
Parramatta
Gender
Female
HSC
2015
I saw how you did it and I was so confused... Lol.. You're so smart! I was sorta praying that wasn't 2U maths :D
Thanks, I was actually really surprised when I was able to do it. Lol. Good thing you want have to do this is in the preliminary course, but I'm not so sure about hsc. :)
 

GolfGirl97

back from the dead
Joined
Feb 26, 2013
Messages
300
Location
on the moon
Gender
Female
HSC
2015
omg :'( i didn't study enough at all today. i did like 9 questions from the chapter review in my maths text book and i still have another chapter to go over. shit, shit, shit shiteosfjdnegdsnvjkmskdaehfjdsnv I'm so screwed :'(
i still have to try and memorise these quotes for my listening task in english tomorrow and i just want so sleep right now because i cant keep my eyes open and i cant think..but my dad says if i sleep now most likely ill wake up at 2 or 3 in the morning :S :S :S
 

lavender1001

Active Member
Joined
Feb 17, 2014
Messages
319
Location
Parramatta
Gender
Female
HSC
2015
omg :'( i didn't study enough at all today. i did like 9 questions from the chapter review in my maths text book and i still have another chapter to go over. shit, shit, shit shiteosfjdnegdsnvjkmskdaehfjdsnv I'm so screwed :'(
i still have to try and memorise these quotes for my listening task in english tomorrow and i just want so sleep right now because i cant keep my eyes open and i cant think..but my dad says if i sleep now most likely ill wake up at 2 or 3 in the morning :S :S :S
Wow. U need a break. There's no point studying if you are half - asleep so I suggest taking a power nap (exactly 30 min). Can I ask what exercise u are up to in class?
 

GolfGirl97

back from the dead
Joined
Feb 26, 2013
Messages
300
Location
on the moon
Gender
Female
HSC
2015
Wow. U need a break. There's no point studying if you are half - asleep so I suggest taking a power nap (exactly 30 min). Can I ask what exercise u are up to in class?
yeah, i think I'm just gonna go to sleep soon....i can study tomorrow morning for english and after school ill try and finish maths. its just i wanted to finish all my chapter reviews today so i could do a practice test tomorrow arvo :'( looks like ill be doing chapter reviews and a practice test :S
in class we are up to exercise 5.5 or something but I'm still up to 4.7 I'm so behind D;
i hate life!!!! D; x(
 

matchalolz

Well-Known Member
Joined
Feb 18, 2014
Messages
1,179
Gender
Undisclosed
HSC
2015
yeah, i think I'm just gonna go to sleep soon....i can study tomorrow morning for english and after school ill try and finish maths. its just i wanted to finish all my chapter reviews today so i could do a practice test tomorrow arvo :'( looks like ill be doing chapter reviews and a practice test :S
in class we are up to exercise 5.5 or something but I'm still up to 4.7 I'm so behind D;
i hate life!!!! D; x(
if it makes you feel any better, i still have 500 words left to write for my business report and an english test to study for!! the report is due tomorrow and i could just finish it off now, but i'm trying to remember stuff for my english coz tomorrow i wont have time to do this as i get home at 8:30 :(

just remember, at least it's year 11, and we're all in this together yeah? if i were u i would actually sleep now and get up at 5 am to study. i do this when i write my english essays
 

hawkrider

all class
Joined
Jul 15, 2013
Messages
2,002
Gender
Male
HSC
N/A
if it makes you feel any better, i still have 500 words left to write for my business report and an english test to study for!! the report is due tomorrow and i could just finish it off now, but i'm trying to remember stuff for my english coz tomorrow i wont have time to do this as i get home at 8:30 :(

just remember, at least it's year 11, and we're all in this together yeah? if i were u i would actually sleep now and get up at 5 am to study. i do this when i write my english essays
"We're all in this together!"

(Oh lord, that high school musical reference was terrible)
 

justem

'Alpha' female ;)
Joined
Jan 3, 2014
Messages
1,848
Gender
Female
HSC
2015
Lavender come library Wednesday after school yeah ?
 

Crisium

Pew Pew
Joined
Feb 17, 2014
Messages
2,010
Location
Australia
Gender
Male
HSC
2015
if it makes you feel any better, i still have 500 words left to write for my business report and an english test to study for!! the report is due tomorrow and i could just finish it off now, but i'm trying to remember stuff for my english coz tomorrow i wont have time to do this as i get home at 8:30 :(

just remember, at least it's year 11, and we're all in this together yeah? if i were u i would actually sleep now and get up at 5 am to study. i do this when i write my english essays
Please never say that again :chainsaw:

Never seen the movie, and I never will :rotfl:
 
Status
Not open for further replies.

Users Who Are Viewing This Thread (Users: 0, Guests: 3)

Top