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Mathematica says:
"NDSolve::alliv: "The function x[t] was specified without dependence on all the independent variables. Each function must depend on all the independent variables.""
But function x depends only on t, there is no other variable specified in the code.
What could be the problem? I attach .nb file below.
"NDSolve::alliv: "The function x[t] was specified without dependence on all the independent variables. Each function must depend on all the independent variables.""
But function x depends only on t, there is no other variable specified in the code.
What could be the problem? I attach .nb file below.
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