Recent content by Jeff Cook

  1. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    @ Halls of Ivy, Yes, you are correct, those are instructions into how equations are to be evaluated. In fact, I retract much of what I wrote above in that it seems upon further investigating this, there is no authority over this matter. But also note, that this isn't a Physics take alone, and...
  2. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    * "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012. * the third edition of Mechanics by Landau and Lifgarbagez contains expressions such as hPz/2π (p. 22), and the first volume of the Feynman Lectures contains expressions such as...
  3. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    @ CDUX, Your post was straight forward and clear, and as easy to understand as "what is the physical meaning of subtraction?" If 4 parts amount to a whole, if you take away 2 parts, you get still 2 parts. If you take away 1/2, you get 3 1/2. Similarly goes for division in my answer to your...
  4. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    The American Physical Society states that multiplication is of higher precedence than division with a slash, as do texts by Feynman, Landou, Lifgarbagez and others. The original question asked about the "physical meaning", and the physical world does require precedence of multiplication in a...
  5. J

    On solving for a variable in the magnitude of a complex number

    Whatever, Stephen. Good luck. And have a good holiday.
  6. J

    On solving for a variable in the magnitude of a complex number

    Stephen, I think I found the fundamental problem with this equation and I have been able to simplify it. Considering a, b and c (a-b)^-4 - b^2 = sqrt{b} = c There is only one possible argument for a that will ever provide a solution: a = lim A If A is a function, then (lim (A)-b)^-4 - b^2...
  7. J

    On solving for a variable in the magnitude of a complex number

    Iif there is no straight forward solution to the above alone as it is expressed, then I should explain I am working with two matrices, one proportionate to another. d is the divisor of the differentiation operator of another matrix, a matrix of a probability distribution. Hope those facts of...
  8. J

    On solving for a variable in the magnitude of a complex number

    It can be expressed in terms of two Hermitian Matrices, one 2X2 if you consider z and the d the limits of two parameterized constants z(t), d(t), and the other an infinite Hermitian matrix including all points in z(t) and d(t). I typically work with the limits, thus 2X2 for solutions involving...
  9. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    Take 2 right triangles back to back to form an isosolese. How many triangles do you have? 3? The two rights and the isosolese, the sum of the two? Take one away from 3, how many do you have? 1? 3-1=1? No...cause the whole is equal to the sum of its parts. Gotta follow that else all math...
  10. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    It's an expression so it could express just about anything you want, the past, the present or the future or something else. But the origins of the concept of division must follow after multiplication...don't you think? Else one runs into paradoxes and maybe even 2+2=5 if you continue forward...
  11. J

    Asymptotic notation informal definitions

    I don't think it's possible to know what you are talking about. Could you please try to explain your question over?
  12. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    Or by the order of operations, the whole is a product first. Then it can be divided. How does one crack and egg before it is created?
  13. J

    [Basic question] What is the 'physical' explanation of a division by a fraction?

    "dividing by 2, means we cut something in two." Not necessarily...the deeper meaning of a fraction to me is how many halves does it take to add up to a whole, as wholes are created before they are destroyed. J
  14. J

    On solving for a variable in the magnitude of a complex number

    Also forgot it here... a^-2=b^2+ic^2 Should be a^-2=Sqrt{b^2+ic^2}
  15. J

    On solving for a variable in the magnitude of a complex number

    I forgot my square root above in =(-(1-d)/2)^2 +/- (i sqrt((1-d)^2+d/4)/2)^2 Should be =sqrt((-(1-d)/2)^2 +/- (i sqrt((1-d)^2+d/4)/2)^2)
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