Newton's method for finding roots from "summary" of Differential Calculus by S Balachandra Rao
Newton's method for finding roots is a powerful tool in the field of calculus. This method allows us to approximate the roots of a function with great precision. The idea behind Newton's method is to start with an initial guess for the root, and then iteratively refine this guess until we get closer to the actual root.
To use Newton's method, we first need to have a function for which we want to find the root. Let's call this function f(x). We also need to have the derivative of this function, which we can denote as f'(x). The first step in Newton's method is to make an initial guess for the root. Let's denote this initial guess as x0.
Once we have our initial guess x0, we can apply the following formula to get a better approximation for the root:
x1 = x0 - f(x0)/f'(x0)
This formula is derived from the idea of linear approximation. Essentially, we are using the tangent line to the graph of the function f(x) at the point x0 to estimate where the root might be. By iterating this process, we can keep getting better and better approximations for the root.
To continue refinin...
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