Most voted "numerical-analysis" questions
Numerical analysis is the study of algorithms that use numerical approximation rather than general symbolic manipulations.
Learn more…5 questions
Sort by count of
-
11
votes2
answers355
viewsNegative variance in R? Floating point error propagation
Suppose the following formula to calculate the variance: variancia <- function(x) { n <- length(x) (1/(n^2-n))*(n*(sum(x^2))-(sum(x)^2)) } Note that it is equivalent to the function var in…
-
3
votes1
answer849
viewsOperations with complex numbers in C - Root calculation of an equation by the Newton Raphson method
I have a problem with a language program C that calculates the root of an equation using the Newton-Raphson method, more specifically when the equation has complex roots. In my case the equation I’m…
-
3
votes1
answer93
viewsCHALLENGE: Spline algorithm(s) with derivative continuity(s)
It is known that a polynomial fn:x->y=c0+x*c1+x²*c2+x³*c3+...+x^n*cn can meet the N=n+1 conditions and from n=1 there is convenience to use in Spline formulas, for example f1 can meet the…
-
0
votes1
answer899
viewsNewton-Raphson algorithm
consider the Newton-Raphson algorithm for calculating the roots of the equation f(x)=0 with (0.5, 1 , 2 , 3.4556) for each initial x. f(X)=X 4-12X 3+47x 2-60X I made the same code as the algorithm,…
-
0
votes0
answers64
viewsCHALLENGE: MQO curve adjustment or similar with minimization of other types of error measurements
Context The MQO (ordinary least squares) method is known to receive: a function model f parameter x (which can represent several parameters) from a model with coefficients c[1], c[2], ..., c[o],…
algorithm performance mathematics numerical-analysis square-minimaasked 4 years, 11 months ago RHER WOLF 1,529