1Department of Statistic and Mathematics, Nour Branch, Islamic Azad University, Nour, Iran.
2Department of Statistics, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.
The aim of this paper is the analytical solutions the family of rst-order nonlinear stochastic differential equations. We dene an integrating factor for the large class of special nonlinear stochastic dierential equations. With multiply both sides with the integrating factor, we introduce a deterministic dierential equation. The results showed the accuracy of the present work.