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Posted by missy on Thursday, February 23, 2012 at 6:30pm.
given f(x)=4x-5, g(x)= x+5 over 4 Find (fog)(x). are these inverse functions?
(fog)(x) = f(g(x)) = f( (x+5)/4) = 4(x+5)/4 - 5 = x+5-5 = x so , yes, they are inverses of each other
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