This mini-demo gives you the opportunity to play around with the 2-norm condition number of a $2\times 2$ matrix.

- What happens if you choose the columns of the matrix to be nearly linearly dependent?
- What happens if you choose the diagonal entries to be very different in magnitude?

In [1]:

```
import numpy as np
import numpy.linalg as la
```

In [3]:

```
la.cond([
[1.1, 0.1],
[0, 1]
], 2)
```

Out[3]: