# Why am I getting a solution to a dependent system?

This is a dependent system, but when I solve it I get an answer. Shouldn't I get an error message?

## dependent system

```
A = Matrix([[2,1],[6,3]])
b = vector([1,3])
A\b
ans: (1/2, 0)
```

Given

`b`

is in the image of`A`

, so`b`

does have a preimage. Try other`b`

such such`vector([1,2])`

and you'll get an error.