Question 1165316
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(a)  f(3) = {{{abs(3)/3}}} = {{{3/3}}} = 1.



(b)  f(-3) = {{{abs(-3)/(-3)}}} = {{{3/(-3)}}} = -1.



                          1, if x > 8
(c)  f(x-8) = {{{abs(x-8)/(x-8)}}} =    not defined if x = 8
                          -1, if x < 8.
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Solved.