How to solve this problem: Not enough input arguments. Nonlinear equations, Vegstein

1 view (last 30 days)
Ivan Kolomiets on 14 Jul 2020
Edited: Govind Narayan Sahu on 14 Jul 2020
function [ root, k ] = veg(f,a,b)
e = 0.00001;
x0 = a;
x1 = b;
xn = x1 - (f(x1)*(x1-x0)/(f(x1)-f(x0)));
k = 1;
while (abs(x1-xn)>e)
k = k+1;
x0 = x1;
x1 = xn;
xn = x1 - (f(x1)*(x1-x0)/(f(x1)-f(x0)));
end
root = xn;
end
[x1f1_vegstein,k] = veg(f1,1.4,1.8);
error1 = abs((abs(x1f1_vegstein)-abs(x1f1))/x1f1);
table(x1f1_vegstein,k,error1)
function f = f1(x1)
f = 2*x1.^4+8*x1.^3-18*x1.^2-1;
end
Not enough input arguments.
Error in f1 (line 2)
f = 2*x1.^4+8*x1.^3-18*x1.^2-1;
Error in lr6 (line 77)
[x1f1_vegstein,k] = veg(f1,1.4,1.8);

Govind Narayan Sahu on 14 Jul 2020
Edited: Govind Narayan Sahu on 14 Jul 2020
use @ symbol with f1 as given below:
[x1f1_vegstein,k] = veg(@f1,1.4,1.8);
After that you will get the root but also get the error since you have not created the variable x1f1. Please check.

Categories

Find more on Systems of Nonlinear Equations in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by