Feng Cheng Chang
Allwave Corporation
Professor, Senior Scientist, Ph. D. in E.E., University of Alabama, IEEE Life member, Retired Professional Interests: mathematics, EM waves, Antennas
Statistiques
RANG
13 524
of 288 913
RÉPUTATION
2
CONTRIBUTIONS
3 Questions
1 Réponse
ACCEPTATION DE VOS RÉPONSES
100.0%
VOTES REÇUS
1
RANG
912 of 19 495
RÉPUTATION
2 004
CLASSEMENT MOYEN
3.80
CONTRIBUTIONS
20 Fichiers
TÉLÉCHARGEMENTS
25
ALL TIME TÉLÉCHARGEMENTS
19659
RANG
131 848
of 143 107
CONTRIBUTIONS
0 Problèmes
0 Solutions
SCORE
0
NOMBRE DE BADGES
0
CONTRIBUTIONS
0 Publications
CONTRIBUTIONS
0 Public Chaîne
CLASSEMENT MOYEN
CONTRIBUTIONS
0 Point fort
NOMBRE MOYEN DE LIKES
Content Feed
A soumis
Simplifying the built-in function [q,r]=deconv(b,a)
Create an efficient function [q,r]=deconc_e(b,a) to eliminate the undesired data that resulted from running the existing built-i...
plus de 5 ans il y a | 1 téléchargement |
A soumis
Function of square matrix: fA=fsm(fx,A)
Given: f(x)= function of x, and A= square matrix. Find: f(A)=function of this matrix A.
plus de 5 ans il y a | 1 téléchargement |
A soumis
poly_gcd(p,q)
Find polynomial GCD by "Leading-coefficient Elinimation"
environ 6 ans il y a | 1 téléchargement |
A soumis
Matrix inverse and determinant
Finding inverse and determinant of matrix by order expansion and condensation
plus de 8 ans il y a | 3 téléchargements |
A soumis
mtx_d(A,D,d)
Making given matrix altered to have a certain constant for its determinant
environ 9 ans il y a | 1 téléchargement |
A soumis
Complex matrix inversion by Real matrix inversion
Calculate the complex matrix inverse by using only real matrix inverse
environ 9 ans il y a | 2 téléchargements |
A soumis
Making given matrix singular
Making the given matrix singular by adding a matrix with multiplier.
plus de 9 ans il y a | 1 téléchargement |
A soumis
inv_det_0(A)
Inverse and determinant of a matrix by order expansion and condensation
plus de 9 ans il y a | 1 téléchargement |
Question
Find s, such that det(A+s*D) = d.
Given a non-sigular matrix A, an arbitrary matrix D, and a real or complex number d, I want to see any short-cut to find the num...
plus de 9 ans il y a | 2 réponses | 0
2
réponsesA soumis
Polynomials with multiple roots solved
Solving multiple roots polynomial, using simple elementary arithematic operations mostly.
presque 10 ans il y a | 1 téléchargement |
Making a magic square matrix singular
Dear Readers: I have already accepted the expected simple answer from Ahmed A Selman, so I would like to conclude this "Quest...
presque 11 ans il y a | 1
Question
Making a magic square matrix singular
We know that any magic square matrix of odd order is not singular. When each element of the matrix is subtracted by the sum-ave...
presque 11 ans il y a | 4 réponses | 0
4
réponsesA soumis
Polynomial division - derived form covolution
Polynomial division is derived directly from convolution.
plus de 11 ans il y a | 1 téléchargement |
Question
Output of a vector which excludes the entries of the second vector
Hello, Problem: Given two distinct integer vectors p and q. I'd like to get a new vector r, that is p excluding the entries o...
plus de 11 ans il y a | 2 réponses | 0
2
réponsesA soumis
Inverse and determinant of square matrix
Inverse and determinant of a square matrix are determined using only simple matrix multiplication
plus de 11 ans il y a | 1 téléchargement |
A soumis
Polynomial division by convolution -- up to finite terms
Division of two polynomials by convolution to get up to K terms.
plus de 12 ans il y a | 1 téléchargement |
A soumis
Polynomial division by convolution - quotient and reminder
Division of two polynomials to get quotient and reminder using convolution matrix.
plus de 12 ans il y a | 1 téléchargement |
A soumis
Solving multiple-root polynomials
Find roots and multiplicities of given polynomials using this short compact routine.
environ 13 ans il y a | 1 téléchargement |
A soumis
Multiple-root polynomial solved by partial fraction expansion
To find poles/residues of the rational function, instead of roots/multiplicities of the polynomial
presque 15 ans il y a | 1 téléchargement |
A soumis
Polynomial coefficient vector derived from sub-polynomial factors
A polynomial coefficient vector is derived from several powered polynomial factors.
presque 15 ans il y a | 1 téléchargement |
A soumis
Factorization of a polynomial with multiple roots
By a novel effective approach "Monic polynomial subtraction" for computing GCD polynomial.
presque 15 ans il y a | 1 téléchargement |
A soumis
Exact GCD of integer polynomials
Exact GCD of a pair of polynomials is obtained by "elimination of leading polynomial coefficient"
plus de 15 ans il y a | 1 téléchargement |
A soumis
Factoring a multiple-root polynomial
A multiple-root polynomial is factored into lower-degree distict-root polynomials, then solved.
presque 16 ans il y a | 3 téléchargements |