Question

If f(x)=x-3, which inequality can be used to find the domain of f(x)?

Ovx-3>0
O x-3>0
O vx-3 <0
O x-3<0

Answer 1

Explanation:

b

Answer 2

Given that,

`f(x) = √(x-3)`

To find,

The domain of f(x).

Solution,

We have,
`f(x) = √(x-3)`

To find domain,

The term under the square root must be positive or null as follows :

`x-3\ge 0`

Adding 3 both sides

`x-3+3\ge 0+3\\\\x\ge 3`

So, the domain is x-3>0 .