Given-Find Non Linear system solution with interp function

[smilani]

Dear all,

I need to solve a system of non linear equation.

I have a problem with mu(theta) function: if I use this function in given-find system, mathcad not find solution, but if I set a constant value the system is solved. 

How can I set the mu function, into the given-find solution to obtain the correct solution?

Best regards

Stefano

[Werner_E · Accepted solution]

The symbolics can't deal with numeric interpolation functions  - that seems to be the real reason for the error.

But I guess you don't need a symbolic result. Simply provide reasonable guess values and use numeric evaluation:

[smilani]

I set the initial guess, but I continue to have a problem. Can you share the file?

Thanks

[Werner_E]

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wrote:

I set the initial guess, but I continue to have a problem. Can you share the file?

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Already deleted

But I guess you forgot to delete the symbolic evaluation (the arrow -> after Find)

Either use Find(...) without anything after it or use a normal equal sign for numeric evaluation

[Werner_E]

Found it again

See attached