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How many linear functions (functions of the form ) are equal to their own inverse? Answer with a non-negative integer or with "inf" for "infinitely many."

 

Thanks, and please try to include steps as well!

 Apr 28, 2023
 #1
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There are only two such functions: f(x) = x and f(x) = -x.

 Apr 28, 2023
 #2
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incorrect answer sir/ma'am 

 Apr 28, 2023

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