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Help with error running a function

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Lavorizia Vaughn
Lavorizia Vaughn 2021-9-30
关闭： Cris LaPierre 2021-9-30
i have the code for #3 of the attached document. For some reason i am getting a warning about the variable p changing size. Im also geting an error for (the code below) which says unrecognized function or variable 'findzero'.
z = findzero(f,x(k-1),x(k),tol);
my code is as follows:
function p = findz(f,a,b,n,tol)
p = [];
x = linspace(a,b,n+1);
for k = 2:length(x)
if f(x(k)) * f(x(k-1)) > 0
continue
else
z = findzero(f,x(k-1),x(k),tol);
p = [p,z];
end
end
disp(p)
end

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