g = inline('9*y^2-24*y+13');
gy = inline('18*y-24 ');
a = 2;
e1=0.0001;n=1;
y = a-(g(a)/gy(a));
z = abs(y-a);
while z>e1
y = a-(g(a)/gy(a));
z = abs(y-a);
a = y;n=n+1;
end
a,n
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