Recent content by HSC2014

  1. HSC2014

    Guide me to success!

    This was my first ever thread on BOS... I DID IT GUYS!! ALLROUNDERS WOO #2yearslater
  2. HSC2014

    Stationary Points

    AwkwardAnchor is right, but what I was trying to get at is that the values of x for which y"=0 are not necessarily the points of inflexion on y. I believe understanding the derivatives and its implications to the original function is far more vital than arriving to the answer. Good luck...
  3. HSC2014

    Stationary Points

    Aah I havn't done this topic and I'm afraid of giving you incomplete or wrong help... but I'll try: The first derivative describes the gradient function of the original function (i.e. how it grows and decays). The second derivative describes the gradient function of the first derivative. So...
  4. HSC2014

    Stationary Points

    Know your aim Smile12345... Why do you want the first/second derivative? How will that help you? Believe me, knowing why you do each step in mathematics will take you a long way.
  5. HSC2014

    why is KJ/g a better measure of 'heat efficiency' of fuels than...

    Sought of... I wouldn't use the word "accurate" but rather less insightful.
  6. HSC2014

    Stationary Points

    Note that determining whether a turning point is a max/min is not necessarily easiest through the second derivative (due to difficult differentiation) and sometimes you ought to just use a table of values and test the immediate left/right points of the stationary point.
  7. HSC2014

    why is KJ/g a better measure of 'heat efficiency' of fuels than...

    To reiterate kev-kun to an extent: The energy content of fuels is dependent on the stored energy within the intramolecular bonds. Now, fuels vary greatly in molecular mass (think hydrocarbon chains) and hence comparison by molar heat of combustion (kJ/mol) is MISLEADING - not wrong. It's...
  8. HSC2014

    Chess thread

    Re: Chess thread? HAHAHA 4 move check mate WATUP
  9. HSC2014

    Chess thread

    Re: Chess thread? http://lichess.org/faciq8sw Somehow you recreated my losing position to meno LOL
  10. HSC2014

    anyone ready to start yr 12???

    !? 342m/2cm = 171000 textbooks?!
  11. HSC2014

    Chess thread

    Re: Chess thread? Watch your back. HAHA :) gonna get you some day
  12. HSC2014

    Chess thread

    Re: Chess thread? http://lichess.org/aa2i63pj
  13. HSC2014

    Chess thread

    Re: Chess thread? Only if you want to lose :D :D
  14. HSC2014

    Chess thread

    Re: Chess thread? Are you in my game or someone else?
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