I'm trying to get my TI-84 to do tricks. But, you can't teach a new dog old tricks, it seems. I have this book in my lap, called Programs for the TI-81 and TI-82 Calculators, by Stuart W. Ball, copyright 1994.
It mentions compatibility problems with the TI-85, a problem from the early days of computing. But TI-84 is in the same family. I caught the problem, the Division by Zero issue. I need to find how to insert the clause to the division in the hand entered code.
But back to real life, I need to know whether there is such a thing as negative tension?