Matrix with differential operators - HELP
조회 수: 13 (최근 30일)
이전 댓글 표시
Hello all,
I need some help of you!
I have a matrix of deferential operators (like the image in attachment) and i want to write it in a Matlab notation in order to multiply it with a matrix of functions.
Anyone can help me ?
Thanks in advance
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/150516/image.png)
댓글 수: 0
답변 (3개)
Azzi Abdelmalek
2013년 10월 9일
%Example
syms x y
f=@(h) [diff(h,y) diff(h,x);diff(h,x) -diff(h,y)]
h=2*x+3*y
f(h)
댓글 수: 3
Azzi Abdelmalek
2013년 10월 9일
Maybe this is what you want
syms x y
f=@(h) [diff(h(1,1),y) diff(h(1,2),x);diff(h(2,1),x) -diff(h(2,2),y)]
h=[2*x+3*y 5*x+6*y;10*x+30*y 22*x-y]
f(h)
Lam Nguyen Van
2021년 2월 24일
Take a look: https://www.mathworks.com/matlabcentral/answers/36580-operator-matrix-for-matrix-differentiation
function dNdv = diffmtx(v,N)
% v -vector m x 1 - sym array
% N - matrix m x n - sym array
rz = arrayfun(@(ii)diff(N(ii,:),v(ii)),(1:numel(v)).','un',0);
dNdv = cat(1,rz{:});
end
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Number Theory에 대해 자세히 알아보기
제품
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!