physics expert..

• usck

  17 Mar 07, 17:08

  me poly only..last time study blindly!! haiz..now working liao then regret..i was thinking of studying PT degree so i going to use 1 yr to recap on what i have learnt during my poly yrs
• Hamiltonian1125

  17 Mar 07, 17:09

  Originally posted by usck:

  me poly only..last time study blindly!! haiz..now working liao then regret..i was thinking of studying PT degree so i going to use 1 yr to recap on what i have learnt during my poly yrs

  Gambate...physics is fun
• usck

  17 Mar 07, 17:10

  a few days ago then i know what is the meaning of dy/dx..
  
  isit differential of y2-y1/x2-x1?
• Hamiltonian1125

  17 Mar 07, 17:24

  Originally posted by usck:

  a few days ago then i know what is the meaning of dy/dx..
  
  isit differential of y2-y1/x2-x1?

  y2-y1/x2-x1 is to find tangent of a slope in a wider range hence not really dy/dx
  
  The real defn of dy/dx=(f(x+delta x)-f(x))/delta x as delta x approaches zero. provided the limit exist.
  
  Simply means. dy/dx at a particular value of x is the "slope" of the curve y at the particular point x. It is exact! Whereas y2-y1/x2-x1 is only exact for straight lines and approximately true for curve, accuracy depends on how far u choose ur point.
  
  In mathematical analysis, dy/dx only exist if for all epsilon greater than zero, there exist a delta such that for all x, 0
• usck

  17 Mar 07, 17:41

  wah seh..u very chim...
  
  got any simpler term..?
• Darkness_hacker99

  17 Mar 07, 18:29

  Originally posted by usck:

  wah seh..u very chim...
  
  got any simpler term..?

  
• Hamiltonian1125

  17 Mar 07, 19:59

  Buy Thomas calculus...very good for beginner and intermediate learner.....lots of examples....in fact those who do the examples in this book will definitely score for A levels.....Also it is good for engineering students who wish to know calculus background.
  For more advance learner....buy Kreyszig advance calculus book....also lots of practices...