文件名称:2013082711183910
- 所属分类:
 - 数学计算/工程计算
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 - 上传时间:
 - 2015-09-28
 - 文件大小:
 - 62kb
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 - 提 供 者:
 - zanjia******
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介绍说明--下载内容均来自于网络,请自行研究使用
对于由n个未知数,n个方程组成的组多元一次方程组:
a11X1+a12X2+...+a1nXn = b1
a21X1+a22X2+...+a2nXn = b2
......
an1X1+an2X2+...+annXn = bn
写成矩阵形式为Ax=b,其中A为系数n*n方阵,x为n个变量构成列向量,b为n个常数项构成列向量。当它的系数矩阵可逆,或者说对应的行列式|A|不等于0的时候,由Ax=b可得:x=b*A-1 ,A-1为A的逆矩阵。-For the group consisting of n unknowns, n equations consisting of a multivariate equations:
a11X1+ a12X2+. . .+ a1nXn = b1
a21X1+ a22X2+. . .+ a2nXn = b2
. . . . . .
an1X1+ an2X2+. . .+ annXn = bn
Written in matrix form as Ax = b, where A is the coefficient n* n matrix, x is a column vector of n variables constituting, b is a constant term n column vectors constituting. When it s reversible coefficient matrix, or the corresponding determinant | A | is not equal to 0, by the Ax = b can be obtained: x = b* A-1, A-1 is the inverse matrix A.
			a11X1+a12X2+...+a1nXn = b1
a21X1+a22X2+...+a2nXn = b2
......
an1X1+an2X2+...+annXn = bn
写成矩阵形式为Ax=b,其中A为系数n*n方阵,x为n个变量构成列向量,b为n个常数项构成列向量。当它的系数矩阵可逆,或者说对应的行列式|A|不等于0的时候,由Ax=b可得:x=b*A-1 ,A-1为A的逆矩阵。-For the group consisting of n unknowns, n equations consisting of a multivariate equations:
a11X1+ a12X2+. . .+ a1nXn = b1
a21X1+ a22X2+. . .+ a2nXn = b2
. . . . . .
an1X1+ an2X2+. . .+ annXn = bn
Written in matrix form as Ax = b, where A is the coefficient n* n matrix, x is a column vector of n variables constituting, b is a constant term n column vectors constituting. When it s reversible coefficient matrix, or the corresponding determinant | A | is not equal to 0, by the Ax = b can be obtained: x = b* A-1, A-1 is the inverse matrix A.
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2013082711183910.xlsx