Help with Matlab function
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hello,
i have to implement a MATLAB function findmanyzeros of the form function p = findmanyzeros(f, a, b, n, which finds zeros in the interval [a, b] using the following strategy:
1. Compute n+1 equidistant points xk , k=0,...,n, between a and b
2. For k = 1,...,n, if f(xk) and f(xk−1) have different signs, compute a zero using findzero
3. The output vector p should contain all the computed zeros
my code is as follows:
function p = findmanyzeros(f, a, b, n, tol)
n=n+1;
for k = 1:n
if f(xk)*f(xk-1)<0
findzero(f);
end
end
p
my code is wrong and i could really appriciate some help, thanks.
采纳的回答
This homework question contains useful instructions already:
"Compute n+1 equidistant points xk , k=0,...,n, between a and b"
You've omitted this step. Use the command linspace() to solve it and assign the output to the variable x.
Then you can use f(x(k)) and f(x(k+1)).
I guess, that calling findzero needs the variable tol. Assign the output of this function to p(k).
4 个评论
Walter Roberson
2021-9-29
However, the output is only to be the list of zeros, so if you assign to p(k) you need to collapse the list later to remove the places no zero was found.
Lavorizia Vaughn
2021-9-30
Stephen23
2021-9-30
"Unrecognized function or variable 'findzero'."
FINDZERO is not a MATLAB function. Did you mean FZERO?:
Lavorizia Vaughn
2021-9-30
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