Question

What is the domain of the function​

Answer 1

$\mathsf{Given \ function \ is : 2\sqrt{x - 6}}$

We can see that there is a square root in the function.

As the value inside the square root should always be positive, We can conclude that (x - 6) should always be positive and can also be equal to zero.

$\implies \mathsf{x - 6 \geq 0}$

$\implies \mathsf{x \geq 6}$

$\implies \mathsf{6 \ \leq \ x \ < \ \infty}$