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Results tagged with matrix
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user 4207
In mathematics, a matrix (plural matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. The individual items in a matrix are called its elements or entries.
5
votes
1
answer
344
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Set of linear equations
Each one is a \$ 3 \times 3 \$ matrix. I want to concatenation them to a \$ 3N \times 3N \$ matrix. I know that the big matrix is symmetric. … clc
load rv
load a %# Nx3 matrix [x1 y1 z1;x2 y2 z2;... ].
%# vectors construct a sphere
L=(301:500)*1e-9; K=2*pi. …
- 293
4
votes
1
answer
350
views
Creating a matrix from a dyadic product
Ax, Ay, Az: [N-by-N]
B=AA (dyadic product)
means
B(i,j)= [Ax(i,j);Ay(i,j);Az(i,j)]*[Ax(i,j) Ay(i,j) Az(i,j)]
B(I,j): a 3x3 matrix. …
- 293