Question

F(x) = radical 2x-1
] 1,2[
] 1/2, +oo[
[1/2, +oo[​

Answer 1

○
`\displaystyle [(1)/(2), ∞[`

Explanation:

All you want to do is set the radical equal to zero to determine your domain, and sinse substituting
`\displaystyle (1)/(2)` in for
`\displaystyle x` would make this 0, it would be the INCLUDED endpoint, so your bracket faces
`\displaystyle (1)/(2),` then continues on infinitely.

I am joyous to assist you at any time.

**The ONLY time this is not the case is when you have a rationale-radical function, in which you must never have 0 in the denominatour.