creating a function to solve non linear equations using simple iteration method

2012 3 13
2 个回答
更新时间：2024 8 18
4 次查看（30 天）

0 个投票

Create a Matlab function named (solveIteration) for solving a non-linear equation using (Simple iteration method) and takes the following inputs: g: function, x0 initial guess TolX as Termination tolerance on the function value, a positive scalar (when to stop iteration) and Maxiter as the max number of iterations if reached means the function has no solution The function returns the following outputs : x as a root(s) of the equation ,error as error message if the equation has no solutions Function seems like below one: function [x,error] = solveIteration(g,x0,TolX,MaxIter) ...
any hints ??

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Geoff
Geoff 2012-3-13
You need to try and make a start, and when you get utterly stuck then post your code along with the problem you are having. If you want to learn to write code, you need to make an effort first.
mark
mark 2012-3-13
trying .. i just need the first steps as in the direction i need to get starting .. im new to matlap
mark
mark 2012-3-19
function [x,err] = solveit(g,x0,to,max)
syms x
x1=x0(1);
while subs(diff(g),x,x0)<=1
n=n+1;
if x1-subs(g,x,x1)<= to && n<= max
x1=subs(g,x,x1);
x=x1;
break
else
x=err;
end
end
end

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回答（2 个）

Hafsa
Hafsa 2024-8-18

0 个投票

n = 3;
a = rand(n, n);
b = rand(n, 1);
% solve a * x + exp(x) = b for x
x = zeros(n, 1);
for itr = 1: 10
x = x - (a + diag(exp(x))) \ (a * x + exp(x) - b);
end

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mark
mark
2012-3-13

回答：

Hafsa
Hafsa
2024-8-18

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