Q2 of 52 Page 1

If f(x) = x + 7 and g(x) = x – 7, x ϵ R, then find .

Given: f(x) = x + 7, g(x) = x – 7


(fog)(x) = f(g(x))


= g(x) + 7


= x – 7 + 7


= x


Therefore,



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