- #1
kash-k
- 17
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I've got a math assignment for uni and I got not idea how to do it. I'm willing to pay 100 usd for someone to do it for me. mail me at irortm@gmail.com if interested, pay via paypal.
A matrix is a rectangular array of numbers, symbols, or expressions arranged in rows and columns. It is commonly used in mathematics to represent and solve systems of linear equations.
Some common types of matrices include square matrices, which have an equal number of rows and columns; identity matrices, which have 1s on the main diagonal and 0s everywhere else; and diagonal matrices, which have 0s everywhere except the main diagonal.
To add or subtract two matrices, they must have the same dimensions. Simply add or subtract the corresponding elements in each matrix to get the resulting matrix.
To multiply two matrices, the number of columns in the first matrix must match the number of rows in the second matrix. The resulting matrix will have the same number of rows as the first matrix and the same number of columns as the second matrix. For each element in the resulting matrix, you multiply the corresponding row of the first matrix by the corresponding column of the second matrix and add the products.
The inverse of a matrix is a matrix that, when multiplied by the original matrix, results in the identity matrix. To find the inverse, you can use the Gauss-Jordan method or the adjugate method. Both methods involve performing row operations on the original matrix to obtain the inverse matrix.