Recent content by Svein

  1. Svein

    I Inner product vs dot/scalar product

    There are more "inner products" than scalar products. Check out Hilbert Space definition.
  2. Svein

    How to avoid compilation errors with multiple header files in C++?

    From a C standpoint, I would use #ifndef <Some variable defined in the header you are trying to include>.
  3. Svein

    Is possible to completely remove solder from a PCB pad?

    As I read the OP, he stated "the bare pads are used to wire bond (using aluminium wire) to the DUT". I replied to that part, not the derived problem of removing the solder.
  4. Svein

    Is possible to completely remove solder from a PCB pad?

    Turn the problem around - if you solder wire-wrap pins to the problematic areas, you can use wire-wrap techniques to connect - or is there something that I do not understand in the problem description?
  5. Svein

    B Is everything in math either an axiom or a theorem?

    Some number systems are better than others in expressing mathemathical conjectures. The Peano axioms are meaningless in roman numerals - leaving aside the fact that 0 does not exist, the notion of a "successor" is not trivial (what is the successor of VIII?)
  6. Svein

    I Orthogonal Basis of Periodic Functions: Beyond Sines and Cosines

    These are called Walsh functions. They are another example of an orthogonal basis function set.
  7. Svein

    What is the best way to learn logic of computer language?

    Sorry, no computer language has any sort of logic built-in. What it has, is a way to describe how to do things. The "logic" must reside in the brain of the implementer. How to transform that logic into working code may depend on the tool chosen - you can write a huge application in assembly...
  8. Svein

    I Using an array to solve a system of equations

    Obviously, if \mathbf{A}\mathbf{x}=\mathbf{y} then \mathbf{x}=\mathbf{A}^{-1}\mathbf{y} as long as \mathbf{A}^{-1} exists. Usually, this just means that det(\mathbf{A})\neq 0 .
  9. Svein

    MHB Closed form solution to sum of sine positive zero-crossings

    Hint: \sin(x) + \sin(y) = 2 \sin(\frac{x+y}{2}) \cos(\frac{x-y}{2}) .
  10. Svein

    I Formula for the propagation of complex errors

    x+iy\equiv Re^{i\theta} where R=\sqrt{x^{2}+y^{2}} and \theta =\arctan(\frac{y}{x}) . This is the easiest representation for complex multiplication (you multiply the argumets and add the angles). Complex addition is easiest in the cartesian notation.
  11. Svein

    I Formula for the propagation of complex errors

    Change to polar coordinates.
  12. Svein

    ADB to Android device over WiFi

    33237 is the port number (a very unusual one). https://isc.sans.edu/data/port.html?port=33237
  13. Svein

    POTW Does the Taylor series for arctan converge at x = 1?

    On another note: Create the Fourier series transform of f(x)=x between -π and π. The series converges at π/2, since f(x) is differentiable in the open interval <-π, π>. Evaluate the series at π/2. For a more complete discussion, see: https://www.physicsforums.com/insights/sums-found-fourier-series/
  14. Svein

    Capacitor equation to be used in electrical analysis

    Yes... actually the full expression is Z_{C}=\frac{-i}{\omega C} to indicate the full phase angle. I just gave the amplitude in my answer.
  15. Svein

    Music Fusion of Western musical instruments

    How about this? It is an ophicleide, a sort of marriage between an early saxophone and a tuba.
Back
Top