# 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.

**Episode Notes**

The code from this video is listed below.

```
import sympy as sp
x = symbols('x')
f = x ** 2 + 4 * x - 16
sp.solve(sp.diff(f, x), x)
f.subs(x, -2)
sp.plot(f - 5)
sp.diff(sp.diff(f, x), x)
```

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