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Question is: Describe all ordered pairs (a,b) such that the inverse of f(x) = ax+b satisfies f(x) = inverse f(x) for all x. 

 

Can someone explain alegebraically why (x-b)/a = ax+b would have a = +/- 1?

 

How do I get the answer as well?

 
 Sep 24, 2019

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