I have a Ti Nspire CX CAS and I'm struggling finding out how to program something such as ln(N/No) = -kt and have it request the entry of each variable and then find whichever variable is not entered. Does anyone know how to do it?
What you could do is store a value to every variable, and then ask for the user to input the variables. Whichever variable still is that value that you set earlier you know has not been set.
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