Attempted to access t(0); index must be a positive integer or logical.
I'm trying to make it that as t is 0, the value is a given input "a". Here's my code:
function y = mynewton(f,a,n)
t(0)=a;
for i=[0:n]
t(i+1)=t(i-1)-f(t(i-1))/diff(f(x),t(i-1));
end
y=t;
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