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liewsi/ia-log-hilesi-ve-stirling-yaklasimi-ile-buyuk-sayilarin-faktoryelini-hesaplama-1.m

Last active December 14, 2015 16:39
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ia-log-hilesi-ve-stirling-yaklasimi-ile-buyuk-sayilarin-faktoryelini-hesaplama-1.m
log_factorial_by_stirling_approximation = @(n)(log(2*pi*n)/2 + n.*log(n) - n);
Raw
ia-log-hilesi-ve-stirling-yaklasimi-ile-buyuk-sayilarin-faktoryelini-hesaplama-2.m
n = 1:250;
y1 = log(factorial(n));
y2 = log_factorial_by_stirling_approximation(n);
subplot(3,1,1),
plot(n,y1, 'k-'), axis([0 max(n) 0 max(y2)]),
title('MATLAB faktöryelinin logu')
subplot(3,1,2),
plot(n,y2, 'b-'), axis([0 max(n) 0 max(y2)]),
title('Stirling yaklaşımının logu')
subplot(3,1,3),
plot(n,abs(y1-y2), 'r-'), title('Fark')
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