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  1. C

    inequality

    Yet you can't do simple inequalities like these? :confused:
  2. C

    inequality

    No offense or anything, but this is really basic Year 11 Extension 1 material. If you don't know how to do these then I think you will find other proceeding topics very difficult. Yes. It's the first topic. But TBH it's just to get people used to the new notations I think.
  3. C

    Sketching a curve

    Solve y'=0 for stat pts. Determine their nature (using y' or y'' sign test). Solve y''=0 and check for concavity changes for inflexions.
  4. C

    sure. done. I love the siggy :D

    sure. done. I love the siggy :D
  5. C

    Doing 10 units or 12 units?

    Not in HSC English, or Chem :P (I'm talking about raw marks) Yep.
  7. C

    Doing 10 units or 12 units?

    You need to do 12 or more units in Year 11. I would recommend dropping to 10 units in Year 12. But only drop the subjects that you are certain not to do well in. Usually the best way to determine this is to try 12 units until Term 1 of Year 12 and then choose accordingly. I did 10 units and...
  8. C

    The God of Maths

    Arrogant much?
  9. C

    proving trig identities help?

    Though, the proof isn't examinable I believe...
  10. C

    proving trig identities help?

    He's asking how you can prove trig identities...
  11. C

    proving trig identities help?

    Draw a right angled triangle with angles \alpha and \beta. Find expressions for sin(\alpha+\beta) and cos(\alpha+\beta) using the angle sum of a triangle property.
  13. C

    Roots with conditions

    Hey Buchnan, you posted the list of topics before here: http://community.boredofstudies.org/238/extracurricular-topics/102519/arc-length.html#post2220688
  14. C

    @murraysp... that is from the Cranbrook 2009 trial :P

    @murraysp... that is from the Cranbrook 2009 trial :P
  15. C

    Polynomials question

    This is from a CSSA trial. It comes up now and then :D
  16. C

    How's SKB class? :D @murraysp... that is from the Cranbrook 2009 trial :P

    How's SKB class? :D @murraysp... that is from the Cranbrook 2009 trial :P
  17. C

    complex numbers

    Uhh no.
  19. C

    does 2u maths still count towards my atar?

    Sorry who's a recluse? :S
  20. C

    3d trig

    No it's not... It's one of the easiest topics. They're pretty much all the same.
  21. C

    integration

    Or just use absolute values... lol
  22. C

    Can a sydney buses driver legally deny a child service?

    It is State Transit's policy that no student will be denied travel.
  23. C

    Induction in 4unit

    You need Topology to prove it.
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