Hello, my name is David, and I am new in the forum. I am getting an error message while trying to run a piece of Mathematica code to compute the exchange of CO2 between different Earth's compartments. It seems that all variables were defined as well as the system of ODE. However Mathematica returns a message thatNDSolve::derlen: "The length of the derivative operator Derivative[1] in \!(*SuperscriptBox[\"x1\", \"[Prime]\", MultilineFunction->None][t]) is not the same as the number of arguments."
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