Expression 1: "g" left parenthesis, "f" , right parenthesis equals left parenthesis, 1 plus 2 "f" , right parenthesis Superscript, 0.2 , Baseline left parenthesis, 1 plus "f" , right parenthesis Superscript, 0.3 , Baseline left parenthesis, 1 minus 0.5 "f" , right parenthesis Superscript, 0.4 , Baseline left parenthesis, 1 minus "f" , right parenthesis Superscript, 0.1 , Baselinegf=1+2f0.21+f0.31−0.5f0.41−f0.1