الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
Differential equations are the mathematical expression of the physical phenomena,and new physical phenomena have been discovered,there has been developed a new differential discipline called;;stochastic differential equations,,.the theroy of stochastic differential equations was initiated and developed by kiyosi ito(1942),has was the first to give an exact definition of the stochastic integrals.