Calculator apps and handheld calculators are clunky, but Python's interactive mode easily ... input by using the arrow keys The _ (underscore) variable stores the previous result.

We can set variables for a ... SymPy operates on symbols the way a numeric calculator or regular Python program works on numbers. For graphing, NumPy offers a more concise way of defining ...

So in this article, I take a look at SymPy, the Python module that allows you to do symbolic mathematics ... The first necessary step is to define the symbolic variables that you are going to use in ...