Newton Raphson’s method

Write down the Matlab /C ++ routine for Newton Raphson’s method for the following problems

cos(x) + 2 sin(x) + x^2, for initial guess as 0

[Aslam Ali]

I can't attempt this question because i didn't understand it please if anyone know the answer and code then kinly share it

Answer 1

[Alan Stevens]

If we set f(x) = cos(x) + 2sin(x) + x^2, then the question is asking for the value of x that makes f(x) = 0. Newton-Raphson is an iterative process that proceeds as follows:

Starting with an intial guess, x1, for x (here you are told to set x1 = 0) find the n+1'th iteration vaue from the n'th iteration value from:

x(n+1) = x(n) - f(x(n))/f`(x(n)) where f`(x) is df/dx. Here: f`(x) = -sin(x) + 2cos(x) + 2x

I hope that helps.

[Aslam Ali]

No sir i need full code of this question in c++