GaussView软件在有机化学多媒体教学中的应用

结合环己烷的构象、共轭体系、对映异构体和红外光谱原理等,介绍利用GaussView软件中的一些功能辅助有机化学课的多媒体教学。     

Salagean算子定义的双单叶函数子类的系数估计

In this paper, a new subclass N_Σ~(h,p)(m, λ, μ) of analytic and bi-univalent functions in the open unit disk U is defined by salagean operator. We obtain coefficients bounds |a_2| and |a_3| for functions of the class. Moreover, we verify Brannan and Clunie's conjecture |a_2| ≤2~(1/2)for some of our classes. The results in this paper extend many results recently researched by many authors.