Newton Raphson Method Formula

In the general form, the Newton-Raphson method formula is written as follows:

xn = xn-1 – f(xn-1)/f'(xn-1)

Where, 

  • xn-1 is the estimated (n-1)th root of the function,
  • f(xn-1) is the value of the equation at (n-1)th estimated root, and
  • f'(xn-1) is the value of the first order derivative of the equation or function at xn-1.

Newton Raphson Method

Newton Raphson Method or Newton Method is a powerful technique for solving equations numerically. It is most commonly used for approximation of the roots of the real-valued functions. Newton Rapson Method was developed by Isaac Newton and Joseph Raphson, hence the name Newton Rapson Method. 

Newton Raphson Method involves iteratively refining an initial guess to converge it toward the desired root. However, the method is not efficient to calculate the roots of the polynomials or equations with higher degrees but in the case of small-degree equations, this method yields very quick results. In this article, we will learn about Newton Raphson Method and the steps to calculate the roots using this method as well.

Table of Content

  • What is Newton Raphson Method?
  • Newton Raphson Method Formula
  • Newton Raphson Method Calculation
    • Convergence of Newton Raphson Method
    • Articles related to Newton Raphson Method:
  • Newton Raphson Method Example
  • Solved Problems of Newton Raphson Method

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What is Newton Raphson Method?

The Newton-Raphson method which is also known as Newton’s method, is an iterative numerical method used to find the roots of a real-valued function. This formula is named after Sir Isaac Newton and Joseph Raphson, as they independently contributed to its development. Newton Raphson Method or Newton’s Method is an algorithm to approximate the roots of zeros of the real-valued functions, using guess for the first iteration (x0) and then approximating the next iteration(x1) which is close to roots, using the following formula....

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