Add a way to solve for all variables in an equation or an equation system

[Happypig375]

Add a way to solve for all variables in an equation or an equation system

[WhiteBlackGoose]

What do you mean by that? You can solve equation systems like that

[Happypig375]

Was thinking of an equivalent of Simplify for EquationSystems so that

• x+2y=3
• x+y=2
  can be simplified to
• x = 1
• y = 1

[Happypig375]

And by extension possibly also for Equations such that
x+y=z
can be

• x = z-y
• y = z-x
• z = x+y

[WhiteBlackGoose]

Solve this equation for each variable

Entity expr = "x + y - z";
expr.Solve("x");
expr.Solve("y");
expr.Solve("z");

[Happypig375]

But this requires knowing the variables in advance. GetUniqueVariables does not help here because Solve requires a list of VariableEntities, which is incompatible with EntitySet. Moreover, even with the help of LINQ to convert the EntitySet to a list of VariableEntities, a MathSException is still thrown with message Amount of equations must be equal to that of vars.

[Happypig375]

And your solution does not work for an EquationSystem.

[WhiteBlackGoose]

I don't understand your problem at all.

Entity expr = "x + y - z";
foreach (var v in MathS.GetUniqueVariables(expr))
    Console.WriteLine(v.ToString() + " = " + expr.Solve(v as VariableEntity));

[Happypig375]

And your solution does not work for an EquationSystem.

[WhiteBlackGoose]

What do you want from equation systems? Are you sure what you are looking for is necessary and at the same time cannot be achived by the user through a couple of lines of code?

[Happypig375]

Superseded by #43