# Math Help - Range

1. ## Range

$f(x)=3x-\frac{2}{(x+1)^{1/2}}$

Domain= (-1,infinity)

How do you find range?

2. ## Re: Range

Originally Posted by theloser
$f(x)=3x-\frac{2}{(x+1)^{1/2}}$
Domain= (-1,infinity)
How do you find range?
Did you start by looking at a plot of the function.

3. ## Re: Range

Yes, I graphed but can't find exact points...

4. ## Re: Range

Originally Posted by theloser
Yes, I graphed but can't find exact points...
The graph is quite clear on what the range is: plot y &#61; 3x - 2&#47;Sqrt&#91;x&#43;1&#93; from x &#61; -1 to x &#61; 20 - Wolfram|Alpha

Where are you stuck?

5. ## Re: Range

Range=(-infinity,infinity)?

6. ## Re: Range

If you keep guessing, you will not get it. Prove it!