式6: "g" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis equals "g" Subscript, 0 , Baseline left parenthesis, "x" plus 1 , right parenthesis minus "g" Subscript, 0 , Baseline left parenthesis, "x" , right parenthesisg1x=g0x+1−g0x
6
式7: "f" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis equals "f" Subscript, 0 , Baseline left parenthesis, "x" , right parenthesis plus left parenthesis, "x" minus floor left parenthesis, "x" , right parenthesis , right parenthesis "g" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesisf1x=f0x+x−floorxg1x
7
quadratic
8
式9: "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis equals "g" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis minus "g" Subscript, 1 , Baseline left parenthesis, "x" minus 1 , right parenthesisg2x=g1x−g1x−1
9
式10: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis equals "f" Subscript, 0 , Baseline left parenthesis, "x" , right parenthesis plus left parenthesis, "x" minus floor left parenthesis, "x" , right parenthesis , right parenthesis left parenthesis, "g" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis plus left parenthesis, "x" minus floor left parenthesis, "x" , right parenthesis , right parenthesis "g" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis , right parenthesisf2x=f0x+x−floorxg1x+x−floorxg2x