SOLUTION: Says to find the domain????? f(x)= sqrt (x+1)

Question 484870: Says to find the domain?????
f(x)= sqrt (x+1)
Found 2 solutions by MathLover1, jim_thompson5910:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

cannot be equal to ; so, if ...->...
and domain are all numbers greater than

Solved by pluggable solver: Plot a graph of any function AND its DOMAIN

Here's a graph of function (sqrt(x+1)).

The domain is shown on the x axis by a green horizontal line.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
You cannot take the square root of a negative number. So the radicand x+1 must be 0 or positive.

In other words, which means that

So the domain is

Note: the above says that the domain is the set of all real numbers that are greater than or equal to -1.

In interval notation, the domain is [)
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