Question 101203
(x) = 2x -1
g(x) = Square root (x-1) 
Find the domain:
f: all real numbers
g: x>=1
f+g: x>=1 because sqrt(x-1) is one of the terms
f-g: x>=1 becaue sqrt (x-1) is one of the terms
fg= f(sqrt(x-1))= 2sqrt(x-1)-1: x>=1 same reason
ff: all Real numbers
f/g = (2x-1)/sqrt(x-1)
Domain is x > 1
g/f = sqrt(x-1)/(2x-1) 
Domain is x>=1
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Cheers,
Stan H.