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I'm new to mathcad and i'm experiencing problems with using it. I need to minimize my function Trr(Rr), where Rr is matrix with given constraints, Trr returns sum of its elements

Here's what i do:

enter image description here

MathCAD says

Variable is not determined

What am i missing? I'm stuck here :(

Thanks in advance, Ilya

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up vote 1 down vote accepted

you just wrote one of conditions twice.

enter image description here

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