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StoppingTest Constraints in NDSolve
Hi, I'm using the NDSolve operation in Mathematica, and I need to add several constraints in the StoppingTest option. How should I do this ? More specifically, I want the iteration to stop if : (x[t] - 1)^2 + y[t]^2 + z[t]^2 < 0.5 and (x[t] + 2)^2 + y[t]^2 + z[t]^2 < 0.5 How to tell this in the StoppingTest option ?