WebJul 16, 2024 · diag函数功能:矩阵对角元素的提取和创建对角阵 设以下X为方阵,v为向量 1、X= diag(v,k)当v是一个含有n个元素的向量时,返回一个n+abs(k)阶方阵X,向量v在 … WebDec 20, 2024 · 4. You can create all of the indices, then it's a single assignment. % Get size of square matrix A n = size (A,1); % Indicies are 1:n^2 by default idx = 1:n^2; % Swap diagonal and antidiagonal indices idx ( [1: (n+1):n^2, n^2-n+1:1-n:n] ) = [n^2-n+1:1-n:n, 1: (n+1):n^2]; % Use the indexing array to create B from A, reshape to be n*n B = reshape ...
MATLABdiag()用法_.diag()_红黄蓝幼儿园的博客 …
Web题2 A是一个由正交向量组成的矩阵(注意,A不是正交矩阵,正交矩阵要求不仅仅每一列正交,而且长度为1),每一列为 \mathbf{w}_{1}, \mathbf{w}_{2}, \dots ,长度为 \sigma_{1}, \sigma_{2}, \dots, \sigma_{n} ,求SVD分解中的 U, \Sigma, \text { 和} V WebApr 15, 2024 · diag with matrix arguments creates a block-diagonal matrix. If, say, A is an M by M matrix, and B is N by N, then diag ( A, B) = ( A 0 M, N 0 N, M B), where 0 M, N is the M by N matrix of zeros. Share Cite Follow answered Apr 17, 2024 at 15:56 lisyarus 15.3k 2 24 46 2 Is there any meaning to d i a g ( A) with no second argument? – jtb shockbutton.com
矩阵A=BC,AC非方阵,B可以求出来吗 - 知乎 - 知乎专栏
WebIf A= diagonal [1,−2,5],B= diagonal [3,0,−4] and C= diagonal [−2,7,0], then find A+ 2B−3C. Medium Solution Verified by Toppr A= diagonal [1,−2,5]=⎣⎢⎢⎡100 0−20 … Web1)定义一个二元符号函数 fxy ( symfun ). fxy = symfun (exp (x)-y, [x y]) 2)符号求解关于 y 的方程 fxy ,得到关于 x 的函数 f. f=solve (fxy,y) 3)计算f的反函数 g. g=finverse (f,x) 4)将fxy和g分别转化为 Matlab 函数句柄 fh 和 gh ( matlabFunction ). fh=matlabFunction (fxy) gh=matlabFunction (g ... WebAug 16, 2012 · diag 创建对角矩阵或获取矩阵的对角元素 语法 D = diag (v) D = diag (v,k) x = diag (A) x = diag (A,k) 说明 D = diag (v)返回包含主对角线上向量v的元素的对角矩阵。. D = (v,k)将向量v的元素放置在第k条对角线上。. k=0表示主对角线,k>0位于主对角线上方,k<0位于主对角线下方 ... rabbit\u0027s foot fern care instructions