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The inverse of the 3x3 matrix can be determined by calculating the determinant and matrix of cofactors and then dividing each term by determinant. Learn more at BYJU'S.
Learn the inverse of a 3x3 matrix, how to solve a 3x3 matrix, and how to take the inverse of a matrix using row reduction method.
Y'=3ax^2+2bx+c Y''=6ax+2b 所以(6ax+2b)+(3ax^2+2bx+c)=2x^2+1 所以3a=2,6a+2b=0,2b+c=1 a=2/3,b=-2,c=4 故特解为Y=2/3x^3-2x^2+4x 原方程对应齐次方程的特征方程为r^2+r=0 r=-1或r=0 所以齐次方程的通解为y*=C1e^(-x)+C2 原方程的通解为y=C1e^(...
Find the inverse of the matrix A=[1−13212−2−21] Step 1: Find det(A). According to our determinant formula for a 3×3 matrix: det(A)=1⋅|12−21|+1⋅|22−21|+3⋅|21−2−2|=1(1+4)+1(2+4)+3(−4+2)=1(5)+1(6)+3(−2)=5+6−6=5. Since ...
Adjoint matrix:The adjoint matrix A (adj A) is formed of the cofactors of the original matrix A, where each entry is given by {eq}C_{ji} = (-1)^{i+j} det A_{ji} {/eq}. The matrix {eq}A_{ji} {/eq} is formed by removing the jth row and the ith column from A. NOTE...
Identity Matrix We just mentioned the "Identity Matrix". It is the matrix equivalent of the number "1": A 3x3 Identity Matrix It is "square" (has same number of rows as columns), It has1s on the diagonal and0s everywhere else. ...
Furthermore, in order to obtain the inverse of a 3×3 matrix, we must first determine the determinant and adjoint of the matrix. Identity Matrix The Identity Matrix (I) is obtained by multiplying a matrix by its inverse. The Identity Matrix is a matrix with a value of one. An Identity...
百度试题 结果1 题目2 15If B =0 2 1is the inverse of a 3 × 3 matrix A, then the sum of all values of a for which a3-1det(A) + 1 = 0. is DA2 B -1G0 相关知识点: 试题来源: 解析 D 反馈 收藏
7.8 Inverse of a Matrix and Gauss-Jordan Elimination-Part 1是7.8 Inverse of a Matrix and Gauss-Jordan Elimination的第1集视频,该合集共计4集,视频收藏或关注UP主,及时了解更多相关视频内容。