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余弦模型在麻诊月平均发病率及发病季节特征研究中的应用王成科本文应用余弦分析法对某地１９５０～１９９１年间麻诊月均发病率资料进行拟合，效果良好。计算方法与步骤参考文献［１，２，３］。结果与分析１．简单余弦曲线方程为：２．含第二谐量三角多项式为：３．求决...
Application of cosine model in the study of average monthly incidence of malaria and seasonal characteristics of onset Wang Chengke This paper applies the cosine analysis method to fitting the data of average monthly incidence of hemp malaria in a certain area from 1950 to 1991 and has good effect. Calculation methods and procedures Reference [1,2,3]. Results and Analysis 1. The simple cosine curve equation is: 2. Contains the second harmonic trigonometric polynomial: 3. Solve ...