北京大学：《数学物理方法》精品课程电子教案（B类）第一部分 复变函数_第1讲 解析函数

一选择题:(7×2分=14分) (1)幂级数在收敛区间内每一点绝对收敛。()

OFDM Systems (N subcarriers) Frequency Available bandwidth is divided into N B subband.Each symbol△f (1kHz) occupies a narrow band but longer time Time

Read these sentences and the following job description. ech sen Which position does each sentence 1-7 describe? For each sentence, mark one letter A, B, C or D on your answer sheet

Question 1-7 Read these sentences and the following book's description. ech contonce Which position does each sentence 1-7describe? For each sentence, mark one letter A, B, C, D or E on your answer sheet

Unit 13 Product description 13.1 Comparing products (1)Vocabulary Match the adjectives in column to their opposites in column B like this:

Look at the question 1-5. In each question, which sentence is correct? For each question, mark the correct letter A, B, or C. The Supplies Department will provide overalls

Questions 1-5 Look at the question 1-5. In each question, which sentence is correct? For each question, mark one letter (, B, or C) on your Answer Sheet

一、名词解释(每题2分,共20分): 1微管组织中心 2go期细胞 3.隐蔽mrna(Masked mRNA) 4血影(Ghost)

1.下列函数的极大值点和极小值点: (1)f(x,y)=(x-y+1 (2)f(x,y)=3mxy-x-y(a>0) (3)f(x,y)=xy (a,b>0)