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设矩阵A= ,则A-1 = .设矩阵 $$ A = \begin{bmatrix} 1 \boxed 0 \boxed 0 \\ 0 \boxed 2 \boxed 2 \\ 0 \boxed 0 \boxed 4 \end{bmatrix} $$,则$$ A ^ { - 1 } = \_ $$ 答案 A^{-1} = ((1 0 0), (0 1/2 , -1/4), (0, 0, 1/4))相关推荐 1设...
( (matrix) 3~~~ 4 0~~~-1 (matrix) ) 【解析】 矩阵A=( (matrix) 1~~~ 0 -1~~~ 2 (matrix) ),B=( (matrix) 2~~~ 4 1~~~ -3 (matrix) ), ∴A+B=( (matrix) 1~~~ 0 -1~~~ 2 (matrix) )+( (matrix) 2~~~ 4 1~~~ -3 (matrix) )=( (matrix) 3~~...
Summary: Weighted generalizations of Hoffman's ratio bound on the independence number of a regular graph are surveyed. Several known bounds are reviewed as special cases of modest extensions. Comparisons are made with the Shannon capacity $Θ$, Lovász' parameter $$, Schrijver's parameter $'$ ,...
Nonnegative matrix tri-factorization (NMTF) is a 3-factor decomposition of a nonnegative data matrix, X ≈ USV┬, where factor matrices, U, S, and V , are ... J Yoo,S Choi - IEEE Computer Society 被引量: 153发表: 2009年 et al., "Using Collaborative Filtering to Weave an CiteS...
型号 1EB020-80 上海轶舜国际贸易有限公司是英国MATRIX离合器国内供应商。MATRIX离合器、MATRIX制动器、MATRIX刹车盘、MATRIX气动离合器、MATRIX摩擦离合器。 Matrix成立于1939年,它的总部设在苏格兰。目前经营在欧洲,美国和亚太地区在市场的输变电产业。Matrix的复杂系统确保工程质量,提高产品和服务质量是高的标准。一个...
矩阵A-1的特征多项式为:f(λ)==(λ+1)(),令f(λ)=0,解得A-1的特征值为λ1=-1,λ2=. 设矩阵A的逆矩阵为 (bmatrix) a & b c & d(bmatrix),则 (bmatrix) -1 & 0 0 & 2(bmatrix) (bmatrix) a & b c & d(bmatrix) = (bmatrix) 1 & 0 0 & 1(bmatrix),求出矩阵...
A=[ (matrix)0\ \ 1 2\ \ 3 (matrix) ],B=[ (matrix)2\ \ 0 1\ \ 8 (matrix) ],求(A^(-1))B. 相关知识点: 试题来源: 解析 【答案】 (A^(-1))B=[ (matrix)-52\ \ 4 2\ \ \ \ \ \ 0 (matrix) ]. 【解析】 设(A^(-1))=[ (matrix)a\ \ b c\ \...
a sequence for the upper bounds of‖A~(-1)‖_∞ was obtained with the aid of the upper bounds of the elements of A~(-1).It is proved that the sequence is monotone non-increasing with a lower bound ‖A~(-1)‖_∞ and,consequently,the sequence is convergent.The given numerical ...
Matrix metalloproteinase-9/tissue inhibitors of metalloproteinase-1 expression and atrial structural remodeling in a dog model of atrial fibrillation: inhi... Matrix metalloproteinase-9/tissue inhibitors of metalloproteinase-1 expression and atrial structural remodeling in a dog model of atrial fibrillation...