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2014-12-03T14:41:30+05:30

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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

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