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If f(x) = (7x + 2)/4, what is the value of (f^{-1}(1))^{-1}?

 Oct 6, 2020
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f(-1 *1) = f(-1) =  (7(-1)+2)/4 = -5/4

 

f (-1) ^-1 is then    1/(-5/4)  =  - 4/5

 Oct 6, 2020

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