when evaluating frequency equation for a MDOF model, if the stiffness and mass matrices are defined in terms of mass, elasticity, and etc constants, the resulting terms of the symbolic evaluation are reversed. (see below). I know that the result in terms of the constants is the correct answer. However, I dont understand why the determinant using values only gives reversed terms? Any ideas or pointers are apprieciated.
Thanks
I see no problem here.
There is no rule or convention about the order in a set of multiple solutions to an equation.
Its quite possible that the symbolics returns the solutions in a different order depending on if just numbers are used or variables & units.
As we don't know how the symbolic "solve" is implemented internally we can't say why.
WHY IS MATHCAD GIVING ME a DIFFERNT result than expected?
Mathcad gives you a correct result - it can't know what you expect 😉
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