Please use Microsoft Excel for this question.
Matrix Inversion in Excel
To compute the inverse of a matrix, say matrix G, please note that this operation is only valid for square matrices with non-zero determinants. The inverse matrix of G is denoted as G^(-1). So G * G^(-1) = I, where I is the identity matrix.
In Excel, there is a quick way to find the inverse of a matrix. Simply use the MINVERSE function, =MINVERSE().
Example:
Given matrix G, use Excel to find its inverse, G^(-1).
Solution:
Step 1:
Matrix G:
Enter the values for matrix G into the cells.
Step 2:
Highlight all the cells from B7 to D9.
Type =MINVERSE(B2:D4) and press Ctrl+Shift+Enter at the same time. Otherwise, you will only get a part of the answer.