If-f-x-log-8x-find-i-f-1-x-ii-f-1-2-

Question Number 152349 by otchereabdullai@gmail.com last updated on 27/Aug/21

If f (x) = \log_{8 x}, find

(i) f^{- 1} (x)

(ii) f^{- 1} (2)

Commented by otchereabdullai@gmail.com last updated on 27/Aug/21

Exactly prof W typo error . Am much

grateful God bless you!

Commented by mr W last updated on 27/Aug/21

i t h i n k y o u m e a n t f (x) = \log_{8} x .

y = \log_{8} x

\Rightarrow x = 8^{y}

\Rightarrow f^{- 1} (x) = 8^{x}

\Rightarrow f^{- 1} (2) = 8^{2} = 64

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