Wu and Fu [18] further used( ) ( (

Wu and Fu [18] further used
( ) ( ( ))
( )
( ) =
2
f x f x f x
f x
F x
 
and transformed the problem of solving multiple roots of f (x) = 0 into that of
solving simple root of f (x) = 0 . Actually, they established the following iteration formulae:

Hasil (Bahasa Indonesia) 1:

Wu dan Fu [18] selanjutnya digunakan( ) ( ( ))( )( ) =2f x f x f xf xF x dan mengubah masalah memecahkan beberapa akar f (x) = 0 menjadimemecahkan sederhana akar dari f (x) = 0. Sebenarnya, mereka mendirikan iterasi rumus berikut: