Answer
$x$
Work Step by Step
We know that $F(x)=1/(x-3)$, so:
$F(\frac{3x+1}{x})=F(3+1/x)=1/(3+1/x-3)=1/(1/x)=x$
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 1 - Functions - 1.1 Review of Functions - 1.1 Exercises - Page 10: 36
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