[Ktechlab-devel] simulator

[Glen]

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Perhaps I should term what I mean an "expression solver," then? It's not
meant to solve differential equations nor anything that complex.

Though anything that can be solved using simple steps shouldn't be too
hard as long as the expression is built with simple components. The
parser itself will be more difficult!

i^2 + log(i) is very much in the range of what I mean. Log functions
have been built into many math libraries for a long time. Every 3D
modeler out there also solves differentials, but that's going a bit far
unless someone else wants to put it in.

Matrix math for linear equations is already in there, I saw. There's
probably an easy way to hook it up so it's accessible from the outside.

- --G

Celelibi wrote:
> 2008/11/10 Glen <gcanaday at gmail.com>
> 
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>>
>> If you can write the equation on paper, can you not also write the
>> simple steps to solving it?
>>
>> f(i) is too complex. Write (1/2i * log(i)) instead. log(i) should be
>> built-in.. not the whole equation. Improvements to the models shouldn't
>> be dependent on improvements to the system as a whole.
>>
> 
> My example with f and g was too general.
> let  u = i^2 + log(i)
> 
> I wish you a very very good luck to solve it.
> Actually, you just can't !
> The only known ways to solve such an equation are approximations. And the
> only I know are numerical approximations.
> Knowing how to compute a logarithm and it's reciprocal does not make you
> know how to solve equations it appears in.
> 
> We don't have to builtin every equation.We just need some general models
> that will be able to solve some kind of equations.
> For example a linear algebra solver that uses matrix can be used a lot of
> time.
> 
> Another issue I see with equations inside component definition is
> differencial equation. How to write them ? How to solve them ?
> 
> 
> Celelibi
> 
> 
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