This is a question from numerical methods asking to explain what the code does for 12 marks.

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% function [func,deriv]= fcn_nr(x)
% func = x^4 - 5*x^3 -124*x^2 + 380*x + 1200;
% deriv = 4*x^3 -15*x^2 -248*x +380;
x = input('Enter initial guess of root location:');
itermax = 100;
iter =0;
errmax =0.001;
error = 1;
fprintf('\n #root rel error\n\n');
while error > errmax & iter <itermax
iter = iter+1;
[f fprime] = fcn_nr(x);
x=x-f/fprime
if fprime ==0
fprintf('ERROR:deriv(x)=0;can"t divide by zero\n')
break;
end;
end
  2 comentarios
KALYAN ACHARJYA
KALYAN ACHARJYA el 4 de Nov. de 2019
You will get 12 points, we do not, please make sincere efforts to get points, if you have specific problem with any line, let us know here.

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James Tursa
James Tursa el 4 de Nov. de 2019

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