place matrix in array part 2
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Hello, I have these points:
x1 = (1,0), x2 = (0.5,1), x3 = (0.5,1.5), x4 = (0, -1), x5 = (-1,1), x6 = (0.5, -1)
y1 = y2 = y3 = 1 and y4 = y5 = y6 = -1.
How do I go about generating a 6 x 6 matrix with entries
y1y1x1'x1 y1y2x1'x2 y1y3x1'x3 y1y4x1'x4 y1y5x1'x5 y1y6x1'x6
y2y1x1'x1 y2y2x2'x2 y2y3x2'x3 y2y4x2'x4 y2y5x2'x5 y2y6x2'x6
y3y1x3'x1 y3y2x3'x2 y3y3x3'x3 y3y4x3'x4 y3y5x3'x5 y3y6x3'x6
y4y1x4'x1 y4y2x4'x2 y4y3x4'x3 y4y4x4'x4 y4y5x4'x5 y4y6x4'x6
y5y1x5'x1 y5y2x5'x2 y5y3x5'x3 y5y4x5'x4 y5y5x5'x5 y5y6x5'x6
y6y1x6'x1 y6y2x6'x2 y6y3x6'x3 y6y4x6'x4 y6y5x6'x5 y6y6x6'x6
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Marc Jakobi
2016 年 10 月 15 日
Well if
y = [ones(3,1); -ones(3,1)]
% or
y = [1;
1;
1;
-1;
-1;
-1];
and x is taken from your previous question, then your result would be.
res = y * y' .* x * x';
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