Gabriel Ozouf 3f6e4444a5 [poincare/derivative] Reduce before replacing symbol
The general formula for deriving a power makes use of the logarithm,
which often disappears at simplification. However, replacing the symbol
before simplifying can lead to applying an invalid argument to the
logarithm, making the whole expression invalid.

e.g. diff(1/x,x,-2)
     If x is replaced by -2 before reducing the power derivative, ln(-2)
will reduce to Unreal, as will the rest of the expression.
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Epsilon is a high-performance graphing calculator operating system. It includes eight apps that cover the high school mathematics curriculum.

You can try Epsilon straight from your browser in the online simulator.

Diving in

We highly recommend you start by reading the online documentation for this project. You'll learn how to install the SDK and about the overall architecture of the Epsilon.

Contributing

If you run into an issue, we would be very happy if you would file a bug on the issue tracker.

We welcome contributions. For smaller changes just open a pull request straight away. For larger changes we recommend you open an issue first for discussion.

License

NumWorks Epsilon is released under a CC BY-NC-SA License. NumWorks is a registered trademark.

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