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    發(fā)布日期: 2021-06-17
  • 語(yǔ)言: Matlab
  • 標(biāo)簽: 未分類??

資源簡(jiǎn)介

matlab開發(fā)-隨機(jī)微分方程解算。用于求LSDE前兩個(gè)矩的函數(shù)

資源截圖

代碼片段和文件信息

%?This?function?finds?out?the?first?two?moments?
%?of?a?linear?Stochastic?Differential?Equation?(LSDE)

%?LSDE?:?dy(t)?=?ay(t)+?b*sigma*dW(t)?where?W(t)?is?Wiener?Process
%?Also?dW(t)=n(t)dt?where?n(t)?is?Gaussian?White?noise

%?Inputs?:?a?b?sigma(?magnitude?of?sqrt?of?PSD)?and?
%??????????c?(?=y(0)?initial?conditions)
%??????????t?(Time?Vector)?

%?Output?:m(t)(?First?Moment?-?Mean)
%?????????M(t)?(Second?Moment)


%?Note?the?solution?statistics?shown?below?have?been?derived?using?Ito‘s
%?Calculus

%?Author:?abhiruplahiri@yahoo.com



function?[mM]?=?LSDE(absigmact)

m=c*exp(a*t);

q=b^2*sigma^2/(2*a)
p=c^2+q;;

M=-q?+?p*exp(2*a*t);??????%?derived?using?Ito‘s?Formula

%plot(tmtM)
%grid







???????




?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件?????????767??2018-07-11?20:20??LSDE.m

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