## anonymous 2 years ago Question about function gof(x) and its domain, click to view

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1. anonymous

$f(x)=\sqrt{x}$ $g(x)=\frac{ 1 }{ 5-x ^{2} }$

2. anonymous

find gof(x) and determine the domain

3. anonymous

$gof(x) = 1/(5-x)$ and its domain is all real number except 5

4. anonymous

not (0, 5)U(5,+infinity)?

5. anonymous

because of the square root of x is involved, so i assumed it's x>or=0, and exclude 5

6. anonymous

that's what im unsure of

7. anonymous

same thing except you are working with only whole numbers and 0 and +infinity should be included so it like [0,5)U(5,+infiinty]

8. anonymous

yes true we can only deal with positive numbers...

9. anonymous

ok let's hope im right i wrote that down on my final exam today.

10. anonymous

thank you