Vector products: Difference between revisions

=={{header|Octave}}==

Octave handles naturally vectors / matrices.

<lang octave>a = [3, 4, 5];

b = [4, 3, 5];

c = [-5, -12, -13];

function r = s3prod(a, b, c)

r = dot(a, cross(b, c));

endfunction

function r = v3prod(a, b, c)

r = cross(a, cross(b, c));

endfunction

% 49

dot(a, b)

% or matrix-multiplication between row and column vectors

a * b'

% 5 5 -7

cross(a, b) % only for 3d-vectors

% 6

s3prod(a, b, c)

% -267 204 -3

v3prod(a, b, c)</lang>