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Terminal calculator with differential error estimates
This is a terminal calculator with a remarkable twist.
It uses symbolic differentiation to provide a numerically
precise error estimate with each calculated answer.
It mimics the functionality of an HewlettPackard ReversePolishNotation
[RPN] calculator simply because I like RPN. But along with your answer,
you get some measure of its trustworthiness.
Runs on PCs or laptops running Windows or Linux.