John Starrett

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16 years, 106 days

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These are answers submitted by John Starrett

Here is another way to do it.

L1:= op(indets(DEplot({diff(x(t),t)=x(t)+x(t)^3-x(t)^5,diff(y(t),t)=1},
[x(t),y(t)], t=0 .. 12, [[x(0)=2.5,y(0)=1]],numpoints=1000),list(list(numeric)))):

plot(L1,coords=polar,scaling=constrained);

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