复合型积分因子的存在定理及应用

The Existence Theorem Complex Integrating Factor and Its Application

给出了微分方程 M( x,y) dx+N ( x,y) dy=0复合型积分因子的定义 ,得到了复合型积分因子存在的充要条件和计算公式 .

Give the definition of complex integrating factor about differential equation Then obtains the necessary and sufficient condition of the existence of complex integrating factor and its calculating formula.