Use composition of functions to determine whether f and g are inverses of one another. f(x)=3x;g(x)=1/3x
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Originally Posted by renebran Use composition of functions to determine whether f and g are inverses of one another. f(x)=3x;g(x)=1/3x If the functions are inverse then $\displaystyle f^{-1}(x) = g(x)$ $\displaystyle f^{-1}(x) = \frac{x}{3}$ I do not know if you means $\displaystyle \frac{1}{3x}$ or $\displaystyle \frac{x}{3}$
Start by finding $\displaystyle f(g(x))$ , what do you get?
Originally Posted by e^(i*pi) If the functions are inverse then $\displaystyle f^{-1}(x) = g(x)$ $\displaystyle f^{-1}(x) = \frac{x}{3}$ I do not know if you means $\displaystyle \frac{1}{3x}$ or $\displaystyle \frac{x}{3}$ is what I meant
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