Question: How can set up condition of the parameter to make my equation bigger or smaller or zero?

i have four equations i want make them be bigger or smaller than zero i want randomly number(if it is small number it will be better)   for making my equation be bigger or smaller?  how we can do something like that?

condition-parameters.mw

i am lookinf or something like that 

16-cases-failed.mw

 

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