Goodwin–Staton integral: Difference between revisions

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In mathematics the Goodwin–Staton integral is defined as :^[1]

G(z)=\int _{0}^{\infty }{\frac {e^{-t^{2}}}{t+z}}\,dt

It satisfies the following third-order nonlinear differential equation：

4w(z)+8\,z{\frac {d}{dz}}w(z)+(2+2\,z^{2}){\frac {d^{2}}{dz^{2}}}w(z)+z{\frac {d^{3}}{dz^{3}}}w\left(z\right)=0

$G(-z)=-G(z)$

$G(z)=\left(1-\gamma -\ln(z^{2})-i\operatorname {csgn} (iz^{2})\pi +{\frac {2\,i}{\sqrt {\pi }}}z+(-2+\gamma +\ln(z^{2})+i\operatorname {csgn} (iz^{2})\pi \right)z^{2}+{\frac {-4/3\,i}{\sqrt {\pi }}}z^{3}+\left({\frac {5}{4}}-1/2\,\gamma -1/2\,\ln(z^{2})-1/2\,i\operatorname {csgn} (iz^{2})\pi \right)z^{4}+O(z^{5}))$

^ Frank William John Olver (ed.), N. M. Temme (Chapter contr.), NIST Handbook of Mathematical Functions, Chapter 7, p160,Cambridge University Press 2010

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	In mathematics the '''Goodwin–Staton integral''' is defined as :<ref>Frank ~~W.J.~~ Olver (ed.), N.M. Temme (Chapter contr.), NIST Handbook of Mathematical Functions, Chapter 7, p160,[[Cambridge University Press]] 2010</ref>		In mathematics the '''Goodwin–Staton integral''' is defined as :<ref>[[Frank William John Olver]] (ed.), N. M. Temme (Chapter contr.), NIST Handbook of Mathematical Functions, Chapter 7, p160,[[Cambridge University Press]] 2010</ref>

	: <math>G(z)=\int_0^\infty \frac {e^{-t^2}}{t+z} \, dt</math>		: <math>G(z)=\int_0^\infty \frac {e^{-t^2}}{t+z} \, dt</math>