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how I solve this
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hi if i have polynomial like
p1 = x^2+x*y+y^2-2
p2 = x+y+x*y
and set of points like S= {(1,0),(1,-1),(5,7),...,(-1,-8)} , how I solve these polynomial on this set and get complete answer in a easy way. i mean all these polynomial evaluated on each point of set.
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Walter Roberson
el 22 de Jun. de 2016
S= {[1,0], [1,-1], [5,7], [-1,-8]}; %not the most natural of representations, but if it is what you have...
xy = cell2mat(S(:));
x = xy(:,1);
y = xy(:,2);
Now rewrite your multinomials to be vectorized:
p1 = x.^2 + x.*y + y.^2 - 2;
p2 = x + y + x.*y;
And you can then graph
pointsize = 20;
scatter3(x, y, p1, pointsize, 'r');
hold on
scatter3(x, y, p2, pointsize, 'b');
hold off
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