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01-07-2017
Mathematics

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Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

f of x equals eight divided by x and g of x equals eight divided by x

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amathzing amathzing

01-07-2017

f(x) = 8/x and g(x) = 8/x

To find f(g(x)), all you do is substitute g(x) into the x value of f(x).

So f(g(x)) = 8/(8/x) which = x

Similarly g(f(x)) is found by substituting f(x) into the x value of g(x)

g(f(x)) = 8/(8/x) which = x

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