Expression 4: "f" left parenthesis, "x" , right parenthesis equals "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesisfx=f3x
4
Expression 5: "f" Subscript, 0 , Baseline left parenthesis, "x" , right parenthesis equals "x"f0x=x
5
Expression 6: "f" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis equals log left parenthesis, 1.1 plus "x" , right parenthesisf1x=log1.1+x
6
Expression 7: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis equals absolute value left parenthesis, "x" , right parenthesisf2x=absx
7
Expression 8: "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis equals exponent left parenthesis, "x" , right parenthesisf3x=expx