MATLAB: Array Division

array

When I entered two arrays,

u = [1 2 3 4];v = [5 6 7 8];

and did the division using,

u/v

I got,

ans = 0.4023.

How to interpret the answer and what's the definition of array division like 'u/v' rather than element-wise 'u./v'?

Thanks.

Best Answer

Usually u/v is equal to u*inv(v) in matrix terms.

However, since v does not have an inverse Matlab will calculate the Moore-Penrose pseudoinverse of v instead. This can also be done directly:

u*pinv(v) = 0.4023

Related Solutions

MATLAB: How to shift a fsurf plot

r = @(u,v) 2 + sin(7.*u + 5.*v);
funx = @(u,v) r(u,v).*cos(u).*sin(v);
funy = @(u,v) r(u,v).*sin(u).*sin(v);
funz = @(u,v) r(u,v).*cos(v);
% fsurf(funx,funy,funz,[0 2*pi 0 pi]); % This plot should be shifted
xshift = 2; yshift = -2;
% fsurf( @(u,v)funx(u-xshift,v-yshift), @(u,v)funy(u-xshift,v-yshift), @(u,v)funz(u-xshift,v-yshift), [0 2*pi 0 pi])
M = 100 ; N =100 ;
u = linspace(0,2*pi,M) ;
v = linspace(0,pi,N) ;
[U,V] = meshgrid(u,v) ;
X = funx(U,V)-2 ;
Y = funy(U,V)+2 ;
Z = funz(U,V) ;
surf(X,Y,Z)

MATLAB: How to shuffle two vectors

u = rand(1,10);
v = 10*rand(1,10);
uv = [u; v]; uv = uv(:)';

n = numel(u); uv([1:2:2*n-1 2:2:2*n]) = [u v];

Best Answer

Related Solutions

MATLAB: How to shift a fsurf plot

MATLAB: How to shuffle two vectors

Related Question