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What is the correct way to use Stirling's approximation in this …
Feb 9, 2011 · Homework Statement I don't really understand how to use Stirling's approximation. here's an example you flip 1000 coins, whts the probability of getting exactly 500 head and 500tailsHomework Equations N!=NNe-N(2pieN)1/2The Attempt at a Solution wht they did was 21000 total number outcome...
Simplifying limit with Stirling approximation - Physics Forums
Oct 12, 2020 · Summary:: Using stirling approximation to determine limit at infinity is not giving the correct answer. I'm trying to determine why $$ \lim_{N \rightarrow +\infty} ln( \frac {N!} {(N-n)! N^n}) = 0$$ N and n are both positive integers, and n is smaller than N. I want to use Stirling's, which becomes exact as N->inf: $$ ln(N!) \approx Nln(N)-N $$
Stirling's approximation/Multiplicity - Physics Forums
Jan 24, 2010 · a) Use Stirling's approximation to estimate the height of the peak in the multiplicity function. b) Use the methods in this section to derive a formula for the multiplicity function in the vicinity of the peak, in terms of [tex]x \equiv N_{\uparrow} - (N/2)[/tex] Check that your formula agrees with your answer to part (a) when x = 0.
Can anyone justify this derivation of Stirling’s approximation?
Jan 6, 2019 · The famous Stirling’s approximation is ##N! \\approx \\sqrt{2\\pi N}(N/e)^N## which becomes more accurate for larger N. (Although it’s surprisingly accurate for small values!) I have found a nice derivation of the formula, but there is one …
How was Stirling's approximation derived? - Physics Forums
Apr 23, 2003 · In summary, Stirling's approximation was derived by mathematician James Stirling in the 18th century. He observed that as the number n gets larger, the factorial of n (n!) approaches the value of √(2πn)(n/e)^n.
Stirling approximation for gamma function - Physics Forums
Dec 23, 2008 · Stirling approximation for gamma function Thread starter jostpuur; Start date Dec 23, 2008; Tags
Proving Both Upper and Lower Bounds for Stirling's Approximation
Sep 1, 2020 · The upper and lower bounds of Stirling's formula are so good, that I would use both of them just to be on the safe side. 1< e^{1/(12n+1)} < \dfrac{n!}{\sqrt{2\pi n}\cdot\left(\dfrac{n}{e}\right)^n} < e^{(1/12n)}< 1+\dfrac{1}{11n}
Einstein solid, Sterling approximation - Physics Forums
Jan 24, 2008 · Homework Statement Use Sterling's approximation to show that the multiplicity of an Einstein solid, for any large values of N and q is approximately... Insights Blog -- Browse All Articles -- Physics Articles Physics Tutorials Physics Guides Physics FAQ Math Articles Math Tutorials Math Guides Math FAQ Education Articles Education Guides Bio ...
How to proof stirling approximation - Physics Forums
Jan 25, 2019 · First, do you understand that "Stirling's Approximation" is an approximation.There is NO proof that "ln(x!)= xln(x)- x" because that is NOT true- they are approximately equal, not equal.
Defect concentration formula w/o Stirling approximation - Physics …
Jul 19, 2021 · The defect concentration is normally expressed by using Stirling approximation (SA) for very nice simplicity. However, in the case of wide bandgap materials, it is common to see the concentrations of electrons or defects are too small to use SA.