Left multiply both sides of the matrixequation( [(array)(cc)1& -2 2& -7(array)]⋅ [(array)cx y(array)]=[(array)c-7 -29(array)]) by the inversematrix( [(array)(cc)7/3& -2/3 2/3& -1/3(array)]).( ([(array)(cc)7/3& -2/3 2/3& -1/3(array)]⋅ [(array)...
$$ \begin{bmatrix} 1 \boxed 1 \\ \frac { 1 } { 2 0 } \boxed - \frac { 1 } { 5 } \end{bmatrix} . \begin{bmatrix} x \\ y \end{bmatrix} = \begin{bmatrix} 4 0 \\ - 1 \end{bmatrix} $$ Find the inverse of the coefficientmatrix of [$$ 1 \\ \frac { ...
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Using the inverse matrix to solve equationsAx, B
Example 2: Fix the Error in solve.default() : Lapack routine dgesv: system is exactly singular This example shows how to properly apply the solve function to a matrix in R. For this, we first have to create another matrix: my_mat2<-matrix(1:4, ncol=2, nrow=2)# Matrix with differe...
解析 x_1=8, x_2=-4, and x_3=-9 (bmatrix) x_1 x_2 x_3(bmatrix) =(bmatrix) 3&3&-1 -2&-2&1 -4&-5&2(bmatrix), (bmatrix) 3 1 4(bmatrix) =(bmatrix) 8 -4 -9(bmatrix)The solution is, x_1=8, x_2=-4, and x_3=-9...
题目 In Exercise, use the inverse matrix found in Exercise to solve the system of linear equations.(cases)x_1-2x_2-x_3-2x_4=03x_1-5x_2-2x_3-3x_4=12x_1-5x_2-2x_3-5x_4=-1-x_1+4x_2+4x_3+11x_4=2(cases) 相关知识点: 试题来源: 解析 (2, 1,0, 0) 反馈 收藏 ...
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Find theinverseof thecoefficientmatrix. Tap for more steps... Theof a2×2can be found using the1|A|[d-b-ca]where|A|is the determinant ofA. IfA=[abcd]thenA-1=1|A|[d-b-ca] Find the determinant of[4-1-41]. determinant[4-1-41]=|4-1-41| ...