MedVision ad

Search results

  1. F

    All–round Achievers List

    I think you're right, but I don't think it would matter for him if rather than med, he might prefer to study something that he's more interested in
  2. F

    IB Maths Tutor - Sydney

    free bump
  3. F

    Integration question

    'You must spread some Reputation around before giving it to Trebla again.'
  4. F

    Integration question

    this is very neat wish I could rep
  5. F

    Integration question

    I doubt that's gonna appear in any of your school assessments or the hsc but it's quite intuitive to understand the idea of an improper integral this is an example: in your particular question, we should get(after doing the substitution) :
  6. F

    Tricky complex / polynomial question

    "P(x) is an even polynomial with real coefficients" yeah, I wasn't really thinking clearly, OP's approach was right (i.e. if z=rcis(theta) is a root, then -z=-rcis(theta) must also be a root since it's even) we have: one complex root z, one real root a, 1< a <2 then zbar is a...
  7. F

    The Mathematics CORNY Pick Up Lines THREAD

    Re: [The Mathematics CORNY Pick Up Lines THREAD] reminds me of this even 'function' , hm
  8. F

    Calculus Inequality - 2009 JRAHS TRIAL

    and you can check that the restrictions are satisfied , when you substitue
  9. F

    Calculus Inequality - 2009 JRAHS TRIAL

    sorry, my bad they're written in white , you gotta highlight them to read I didn't wanna spoil it, so before you read it, these are some hints: basically you need to compare the inequaity you can obtain from part i) and the one to prove in part ii) Then you'll need to make some...
  10. F

    Binomial theorem

    I found it quite difficult to differentiate 3u from 2u content as well when I was a student
  11. F

    Calculus Inequality - 2009 JRAHS TRIAL

    just for the 1st part of ii) compare the given inequality with the one you obtained in part i): y= [ x^k-(c-x)^k ] /2 <= (c/2)^k , we'll need to make the following substitutions : let c=a+b then we can let x=a, so c-x=a+b-a=b and we get a strict inequality since: a=/=b, so x=/= c/2...
  12. F

    Binomial theorem

    btw, this is actually an extension 1 topic so I suppose this post is in the wrong section and this is Year 12 , Chapter 5 in the Cambridge book (binomial probability would be in the last chapter of the Year12 book)
  13. F

    Binomial theorem

    used r instead of k here: n over the r in the brackets is the same as nCr, which is equal to and both of them are read as 'n choose k' they're just different notations that people invented to confuse you
  14. F

    Tricky complex / polynomial question

    Consider the complex root z=a+bi note: z^2=(a+bi)^2=a^2+b^2+2abi zbar^2=(a-bi)^2=a^2+b^2-2abi So (a+bi)^2=(a-bi)^2 if and only if a=0 or b=0 i.e. z=a+bi is purely real or purely imaginary when z is purely imaginary that is, z=bi , then zbar=-bi but then -z=-bi=zbar, -zbar=bi=z so -z and...
  15. F

    Official BOS Study Meat v2.0 (Winter Edition)

    but 'study' and 'mEAT' are equally important !!!
  16. F

    Binomial Theroem

    NOTE : (1+x)^8= 8C0 + 8C1 x + 8C2 x^2 +...+ 8C8 x^8 and counting from 1, we have T1, T2, T3, ..., T9 respectively So Tk=8 choose k-1 (*) Tk+1 = 8 choose k the inequality you solved is acutally for Tk+1 > Tk , from which we obtain k<4.5 hence T5>T4>T3>T2>T1 inequality doesn't hold for larger k...
  17. F

    Official BOS Study Meat v2.0 (Winter Edition)

    #1 says that there are currently: 34 students , 13 tutors (including 2 who may not be available) it's great that there are gonna be more engLish tutors willing to help on the day BTW, we could post off topic stuff here: http://community.boredofstudies.org/showthread.php?t=280826&page=2865...
Top