運算式 4: left parenthesis, StartFraction, pi Over 4 , EndFraction , "f" left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , right parenthesisπ4,fπ4
4
運算式 5: left parenthesis, 5 quarters pi , "f" left parenthesis, 5 quarters pi , right parenthesis , right parenthesis54π,f54π
5
運算式 6: left parenthesis, StartFraction, pi Over 2 , EndFraction , "f" left parenthesis, StartFraction, pi Over 2 , EndFraction , right parenthesis , right parenthesisπ2,fπ2
6
運算式 7: left parenthesis, 3 halves pi , "f" left parenthesis, 3 halves pi , right parenthesis , right parenthesis32π,f32π