《基础化学 Fundamentals in Chemistry》课程教学课件(分子形状与结构 The Shapes and Structures of Molecules)Part I 原子、分子的电子结构与化学反应(The Electronic Structure of Atoms and Molecules and Chemical Reactions)第一章 原子结构(Chapter 1 The Electronic Structures of Atoms)第一讲(I-a-1)
《基础化学 Fundamentals in Chemistry》课程教学课件(分子形状与结构 The Shapes and Structures of Molecules)Part I 原子、分子的电子结构与化学反应(The Electronic Structure of Atoms and Molecules and Chemical Reactions)第一章 原子结构(Chapter 1 The Electronic Structures of Atoms)第二讲(I-a-2)
3.1 X(eo)=2xnJe-jon where x[n] is a real sequence. Therefore X(e)=Rl∑xnlo/。 ∑xR(-mu)=∑ x[n]cos(on),and xmm)=m∑刈nm∑刈mc-m)=-2 xn] sin(oon) Since cos(on)and sin(on)are, respectively, even and odd functions of o, Xre(eJo) is an even function of o