# sympy.

**sympy** is a system for symbolic maths in python. It doesn't just compute, it also differentiates, integrates
and automates common calculus steps. The documentation for it can be found here.

**Notes**

The code from this video is listed below.

```
import sympy as sp
l, w = sp.symbols("l, w")
area = l * w
circumference = 2 * l + 2 * w
sp.solve(sp.Eq(circumference, 10), l)
sp.solve(sp.diff(area.subs(l, -w + 5), w), w)
```

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