《高等数学》考研题集（理工类）考研真题四

《高等数学》考研题集（理工类）考研真题三

《高等数学》考研题集（理工类）考研真题一

Part I Structure and Vocabulary Section A Directions: Beneath each of the following sentences, there are four choices marked A, B, c and D. Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET.(5 points) anation

Part I Structure and Vocabulary Section A on A Directions: Beneath each of the following sentences, there are four choices marked A, B, and D)Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET. (5 points)

1.(98-1-03)设A为n阶矩阵,|A≠0,A为A的伴随矩阵,E为n阶单位矩阵.若 A有特征值,则(A)2+E必有特征值

Part I Structure and Vocabulary Section A Directions fo Beneath each of the following sentences, there are four choices marked A, B, C and D)Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET by

1.(99-1-03)设n阶矩阵A的元素全为1,则A的个特征值是

1.(02-1-03)已知实二次型f(x,x2,x3)=a(x2+x2)+4xx2+4xix3+4x2x3经正 交变换x=Py可化成标准形=6y2,则a=

1.(01-1-03)设矩阵A满足A2+A-4E=O,其中E为单位矩阵,则(A-E)-1= 解应填(A+2E) 应设法分解出A-E因子.由A2+A-4E=O,有 (-)(a+2e)=2e,即(a-e)-(a+2e)=e