Hello everyone,

I am trying to understand DAE example in here.

I would like to ask the following: In the example, the constraint used is: 1 = y_1 + y_2 + y_3.

Is is also possible to enforce that y_1, y_2, y_3 \geq 0?

Is so, how?

Hello everyone,

I am trying to understand DAE example in here.

I would like to ask the following: In the example, the constraint used is: 1 = y_1 + y_2 + y_3.

Is is also possible to enforce that y_1, y_2, y_3 \geq 0?

Is so, how?

I think the DAE machinery is only for equality constraints, but there are several methods for keeping states positive in the documentation.

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