Expression 4: "f" Subscript, "s" , Baseline left parenthesis, "x" , right parenthesis equals ceiling left parenthesis, "x" , right parenthesis plus "s" left parenthesis, mod left parenthesis, "x" , 1. , right parenthesis , right parenthesis Has graph. To audio trace, press ALT+T.fsx=ceilx+smodx,1.
4
Expression 5: "s" Subscript, "i" , Baseline left parenthesis, "x" , right parenthesis equals StartFraction, "x" Superscript, StartNestedFraction, 1 NestedOver "n" , EndNestedFraction , Baseline minus left parenthesis, 1 minus "x" , right parenthesis Superscript, StartNestedFraction, 1 NestedOver "n" , EndNestedFraction , Baseline Over 2 , EndFraction left brace, 0 less than or equal to "x" less than or equal to 1 , right brace Has graph. To audio trace, press ALT+T.six=x1n−1−x1n20≤x≤1