[問題] 關於自定function已回收
請問大家一個簡單的問題，
(我是初學者，也爬過文和試著去看help,但還是看不懂><)
我打了一個M檔案如下：
function v=func(x)
v = 816*x^3-3835*x^2+6000*x-3125 ;
除錯後，顯示：
??? Input argument "x" is undefined.
Error in ==> func at 2
v = 816*x^3-3835*x^2+6000*x-3125 ;
為什麼不行執行呢?
因為我想寫一個關於牛頓法的程式如下：
function [res, it] = mynewton(func, dfunc, x, tol)
% x is an initial starting value, tol is required accuracy
it = 0;
x0 = x;
d = feval(@func,x0)/feval(@dfunc,x0);
while abs(d) >tol
x1 = x0-d;
it = it+1;
x0 = x;
d = feval(@func,x0)/feval(@dfunc,x0);
end
res = x0;
除錯後，顯示：
??? Error: File: mynewton.m Line: 5 Column: 12
"func" was previously used as a variable,
conflicting with its use here as the name of a function or command.
See MATLAB Programming, "Determining Which Function Is Called" for details.
到底錯在哪裡？請大家幫忙回答，謝謝!!
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10/29 22:54, , 1F
10/29 22:54, 1F
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