Expression 1: "f" left parenthesis, "x" , right parenthesis equals StartFraction, left parenthesis, log Subscript, "a" , Baseline left parenthesis, StartNestedFraction, "x" NestedOver left parenthesis, 1 minus "x" , right parenthesis , EndNestedFraction , right parenthesis plus 2 "e" , right parenthesis Over 4 "e" , EndFraction Has graph. To audio trace, press ALT+T.fx=logax1−x+2e4e