Comparing Research of the Wavy Degree of Business Income
HE Li-Jun~1,CAI Tao~2,YANG Ming~3 (1.Kunming Medical College, Kunming 650031,China; 2. Department of Mathematics Kunming Teachers College, Kunming, 650031,China; 3.China United Telecommunications Corporation Yunnan Branch,Kunming,650051)
To analyses the changes of business income, we apply two methods: (1) suppose the volume of sales is random variable, (2) suppose the growth ratio of sales is random variable. The result shows that the period cost and the interest yield similar results in the business income wave. As the volume of sales is greater than the boundary point,(the utilization )of the period cost and the interest will increase the wavy degrees of business income. But as the volume of sales is less than the boundary point, the utilization of the period cost and the interest will reduce the wavy degrees of business income.
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