Top "Numerical" questions

This tag is for questions concerning problems using numbers which either cannot be exactly solved, or where the exact solution may be much more difficult to acquire than by using numerical methods.

Generate letters to represent number using ruby?

I would like to generate a sequence of letters i.e. "A", "DE" "GJE", etc. that correspond to a number. …

ruby math numerical
Numerical derivative of a vector

I have a problem with numerical derivative of a vector that is x: Nx1 with respect to another vector t (…

matlab numerical derivative
Fastest 128 bit integer library

I am working on a CPU-heavy numerical computation app. Without going into many details, it's a computational math research project …

c++ c biginteger numerical
python floating number

i am kind of confused why python add some additional decimal number in this case, please help to explain >&…

python floating-point numerical floating-accuracy
Solving nonlinear equations numerically

I need to solve nonlinear minimization (least residual squares of N unknowns) problems in my Java program. The usual way …

java math mathematical-optimization numerical scientific-computing
Bisection method (Numerical analysis)

How many recursions are made before every single root is found? Also, which ones are the roots? Here's my code: …

matlab analysis numerical newtons-method bisection
How to write fast (low level) code?

I would like to learn more about low level code optimization, and how to take advantage of the underlying machine …

c++ c performance optimization numerical
Extract contours from ContourPlot in Mathematica

I have a function f(x,y) of two variables, of which I need to know the location of the …

wolfram-mathematica numerical zero contour
Efficient way to compute geometric mean of many numbers

I need to compute the geometric mean of a large set of numbers, whose values are not a priori limited. …

c++ c algorithm numerical underflow
Particle Swarm Optimization

I'm using Particle Swarm Optimization(PSO) in java. I am having little knowledge about what we do. Since, I am …

java numerical particle-swarm