表达式2: "d" equals floor left parenthesis, "x" , right parenthesisd=floorx
2
表达式3: "a" equals round left parenthesis, "d" times "n" , right parenthesisa=roundd·n
3
表达式4: "f" left parenthesis, "x" , right parenthesis equals StartFraction, log left parenthesis, "a" , right parenthesis Over negative log left parenthesis, StartAbsoluteValue, StartNestedFraction, "a" NestedOver "d" , EndNestedFraction minus "n" , EndAbsoluteValue , right parenthesis minus 2 , EndFractionfx=loga−logad−n−2
