Difference ODEProblem ODAEProblem

[ArnoStrouwen]

https://mtk.sciml.ai/dev/tutorials/acausal_components/#Simplifying-and-Solving-this-System
Docs say 2 states for ODEProblem, 1 state for ODAEProblem, but it looks to me like both are reduced to 1 state?

[ChrisRackauckas]

@YingboMa ? Did it get better and removing equations 😅

[ChrisRackauckas]

The answer is that ODEProblem exists and ODAEProblem was removed.