If given an array like 

```
a = array([[2,4,9,8,473],[54,7,24,19,20]])

```

then how can I write the indexes of the array which are between values x and y?

currently I've got:

```
where(5 > a > 10)

```

if will however give an output if I say for example:

```
where(a > 5)

```

but the where function doesn't take this command and once it will it should output a 2 one dimensional array, is there a way to easily stack them?