Recent content by HakimPhilo

  1. HakimPhilo

    The Difference Between Log and Ln

    There's also ##\lg## which denotes ##\log_2##.
  2. HakimPhilo

    Physics self teaching (curriculum and textbooks)

    For self-studying, there doesn't exist a better bibliography than this one. I highly recommend it!
  3. HakimPhilo

    Why does differentiation find the approximate value?

    Basically it comes from this really simple idea: "The tangent line to ##x_0## resembles the curve near ##x_0##". For instance the curve defined by ##y=\sin x## resembles the tangent line to it at ##0## near zero: For example it is really hard to determine...
  4. HakimPhilo

    Math Symbols in PF 4.0 - Where Did It Go?

    Why not just start using Detexify? You draw a symbol and it will provide you with its LaTeX code.
  5. HakimPhilo

    I really like what you've done with the place

    The site is much more dynamic, hence more users will feel a lot more comfortable here. Thanks for the great work @staff !
  6. HakimPhilo

    What statements can you apply to infinity

    To understand more the philosophy of the infinite read Rucker - Infinity and the mind, it will clarify a lot of misconceptions you have. 1) Infinity isn't odd nor even if you try to apply the definition of an odd and an even number it will basically fail for the infinite, adding to that the...
  7. HakimPhilo

    Solve Equation: Get f(t) from Af(t)+Bf(t)^C=Dsin(ωt)

    If you meant a proof for that such expression with ##C\in\{5,6,7,\ldots\}## don't have a general closed form then look at the Abel-Ruffini theorem.
  8. HakimPhilo

    Solve Equation: Get f(t) from Af(t)+Bf(t)^C=Dsin(ωt)

    So a general closed form does not exist.
  9. HakimPhilo

    Mathematics Learning FlowChart

    There's the excellent Chicago mathematics bibliography: http://www.ocf.berkeley.edu/~abhishek/chicmath.htm which is divided into 3 parts: ELEMENTARY Algebra (4) Geometry (2) Foundations (1) Problem solving (4) Calculus (6) Bridges to intermediate topics (2)...
  10. HakimPhilo

    Whats the best way to factor this

    Here's an outline of the solution: As pointed out by Student100 the substitution ##\cos\theta\leadsto x## produces a quadratic, and if you know the roots of a quadratic -- say ##ax^2+bx+c## with roots ##r_1,r_2## if any -- then you can factor it as ##a(x-r_1)(x-r_2)##. The only step that remains...
  11. HakimPhilo

    Find x,y,z in Sequence: 33, ?,?,?,88

    This system of linear equations, like any other, can be solved by first writing it in upper-triangular form then using the method of back-substitution. Let's first define the terms we used: A system in upper-triangular form is one like...
  12. HakimPhilo

    Are complex numbers just means to an end?

    http://en.wikipedia.org/wiki/Complex_numbers#Applications
  13. HakimPhilo

    Kleppner as first time seeing physics

    Thanks but I finished both books now. :)
  14. HakimPhilo

    Kleppner as first time seeing physics

    I was having the same problem as you some time ago, where I decided to use Kleppner as a first exposition to physics. But I lamentably failed since I didn't have much of the basic university physics knowledge and I didn't know calculus at that time either. But I eventually found the solution...
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