SOLUTION: Find the domain of f(x)=x2+2 and that two on the x is a little 2 above it. I just need one domain problem explained and I think I can get the rest. Finding domain is throwing me fo

Algebra ->  Functions -> SOLUTION: Find the domain of f(x)=x2+2 and that two on the x is a little 2 above it. I just need one domain problem explained and I think I can get the rest. Finding domain is throwing me fo      Log On


   

Question 870833: Find the domain of f(x)=x2+2 and that two on the x is a little 2 above it. I just need one domain problem explained and I think I can get the rest. Finding domain is throwing me for a loop!
Found 2 solutions by ewatrrr, Fombitz:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Domain is ALL real numbers

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Domain is the set of x values for which the function is defined.
A function like this f%28x%29=x%5E2%2B2 is defined for all x values.
A function like g%28x%29=1%2Fx is defined for all x values except x=0 since division by zero is undefined.
A function like h%28x%29=sqrt%28x%2B2%29 is defined for all x except when x%2B2%3C0 or x%3C-2 since the square root of a negative number is not defined.
Look for the values which would cause the function to be undefined and those are the exceptions to the domain.
In this case,
Domain : (-infinity,infinity)