If #f(x) = x+2# and #g(x) = x-2#, what is #(f-g)(x)#? What is its domain?

1 Answer
smendyka
Jan 23, 2018

See a solution process below:

Explanation:

#(f - g)(x) = f(x) - g(x) = (x + 2) - (x - 2) =#

#x + 2 - x + 2 = x - x + 2 + 2 = 0 + 4 = 4#

#(f - g)(x) = 4#

The Domain is the set of all Real Numbers or #{RR}#

The Range is #{4}#

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