K iteration by Newton-Raphson method of finding square root of a number increases accuracy in number of digits.

A K
B 2K
C 3K
D 4K

Correct Answer: 2K

In numerical analysis, Newton’s method(also known as the Newton – Raphson Method, named after Isaac Newton and Joseph Raphson is a method for finding successively better approximations to the roots of a real - valued function.
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