Introduction - If you have any usage issues, please Google them yourself
Newton iteration (Newton' s method) is also known as the Newton- Raphson method (Newton-Raphson method), it is proposed by Newton in the 17th century as a real number domain and in the complex field approximation method for solving equations. Root does not exist in most formula equation, it is very difficult for accurate root, if not impossible, in order to find the root on the approximate equation is of particular importance.