수식 4: "y" equals "f" left parenthesis, "a" , "b" , "x" , right parenthesis times 2 Superscript, StartFraction, negative 1 Over "x" , EndFraction , Baseliney=fa,b,x·2−1x
4
수식 5: "y" equals "f" left parenthesis, "a" , "b" , "x" , right parenthesisy=fa,b,x