Question

find the range and domain.
f(x)=1/x+2

Answer 1

f(x) = (1/x ) + 2   
then      domain is  all real number set except  0.  = R - {0}
Range is  all real values  R.

if    f(x) =  1/(x+2)    then  domain is  all real numbers except  x = -2 : R - {-2}
                       range is all real numbers  :  R