Table 1: Typical forms of 𝐺 ( 𝑡 ) , 𝐻 ( 𝜏 ) , and 𝐾 ( 𝜑 ) based on (2.2) where 𝑡 = 𝑓 ( 𝑦 ) / 𝑓 ( 𝑥 ) , 𝜏 = 𝑓 ( 𝑦 ) / 𝑓 ( 𝑥 ) , 𝜑 = 𝑓 ( 𝑥 ) / 𝑓 ( 𝑥 ) , and 𝜃 { 0 } .

FormsWeight function for 𝐺 ( 𝑡 ) Weight function for 𝐻 ( 𝜏 ) Weight function for 𝐾 ( 𝜑 )

1 1 + 𝑡 2 1 + 𝜏 + 𝜃 𝜏 2 1 + 𝜑 2
2 1 + 𝜃 𝑡 3 ( 1 + 𝜏 ) / ( 1 𝜏 ) 1 + 𝜃 𝜑 3