Expression 4: "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis equals 2 "f" Subscript, 2 , Baseline left parenthesis, StartFraction, "x" Over 2 , EndFraction , right parenthesis squared minus 1f3x=2f2x22−1
4
Expression 5: "f" Subscript, 4 , Baseline left parenthesis, "x" , right parenthesis equals 2 "f" Subscript, 3 , Baseline left parenthesis, StartFraction, "x" Over 2 , EndFraction , right parenthesis squared minus 1f4x=2f3x22−1
5
Expression 6: "f" left parenthesis, "x" , right parenthesis equals left brace, 1 less than or equal to "x" less than 2 : "f" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis , 2 less than or equal to "x" less than 4 : "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis , 4 less than or equal to "x" less than 8 : "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis , 8 less than or equal to "x" less than 16 : "f" Subscript, 4 , Baseline left parenthesis, "x" , right parenthesis , right bracefx=1≤x<2:f1x,2≤x<4:f2x,4≤x<8:f3x,8≤x<16:f4x
6
Expression 7: 2 "f" left parenthesis, StartFraction, "x" Over 2 , EndFraction , right parenthesis squared minus 12fx22−1