Expression 5: "F" left parenthesis, "t" , right parenthesis equals StartFraction, sin left parenthesis, "a" "t" , right parenthesis Over "t" , EndFractionFt=sinatt
5
Expression 6: "G" left parenthesis, "t" , right parenthesis equals StartFraction, cos left parenthesis, "b" "t" , right parenthesis Over "t" , EndFractionGt=cosbtt