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高等数学教学中的两点注记
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作者 邹定宇 王世飞 《课程教育研究(学法教法研究)》 2018年第12期52-52,共1页
高等数学中有些定理的条件,学生容易混淆,有些定理的学生不能灵活运用。本文讨论了一元函数极值求法和分段函数求导中学生易错的问题,供初学者参考。
关键词 高等数学教学 一元函数极值求法 分段函数求导
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VIRAL DYNAMICS IN A DISTRIBUTED TIME DELAYED HCV PATHOGENESIS MODEL 被引量:2
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作者 SHIFEI WANG dingyu zou 《International Journal of Biomathematics》 2012年第6期141-155,共15页
In this paper, we investigate global dynamics for a distributed time delayed HCV infec tion model. Our model admits two possible equilibria, an uninfected equilibrium and infected equilibrium depending on the basic re... In this paper, we investigate global dynamics for a distributed time delayed HCV infec tion model. Our model admits two possible equilibria, an uninfected equilibrium and infected equilibrium depending on the basic reproduction number. By employing the method of Lyapunov functional, we prove that the uninfected equilibrium is global asymptotically stable if the basic reproduction number is less than one, it is unsta ble and the infected equilibrium is global asymptotically stable if the basic reproduction number is larger than one. The simulations results are in good accordance with our analytic results. 展开更多
关键词 Hepatitis C virus viral infection model a distributed time delay globalasymptotic stability Lyapunov functional.
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