having trouble creating fractal picture

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Joseph
Joseph 2014-4-3
评论： Joseph 2014-4-3
Xsubk + 1 = Ysubk*(1 + sin(.7Xsubk) - 1.2*sqrt(|Xsubk|)
Ysubk +1 = .21 - Xsubk
for k = 1:1:19999
I'm not sure how to initiate plotting these points. I don't know how to deal with the subscripts "subk". Any help would be greatly appreciated. Thank You
  1 个评论
Joseph
Joseph 2014-4-3
Figured it out:
x(1)=0;
y(1)=0;
for k = 1:1:19999
x(k+1) = y(k)*(1+sin(.7*x(k))) - 1.2*sqrt(abs(x(k)));
y(k+1) = .21 - x(k);
end
plot(x,y,'o','markersize',2)

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