Question

Find the domain for the functions:

1. f(x)=
`√(x+1)`

2. f(x)= -(x-1)^3+6

3. f(x)= -
`√(x+3)`

Answer 1

1.

`D:x+1\geq0\\ D:x\geq-1\\ D:x\in[-1,\infty)`

2.

`D:x\in \mathbb{R}`

3.

`D:x+3\geq0\\ D:x\geq-3\\ D:x\in[-3,\infty)`