matrices

Matrix word problems

1. Keep the matrix with the most number of variables

2. Change the second matrix to make is easy for operations

3. Check if the elements align

Eg. If the qn gives a 3×4 matrix and a 2×2 matrix change the 2×2 matrix into a 4×1 matrix so as to make multiplication easy

to note when handling matrices

• order of the matrices

• signs (±)

• brackets (35) not equal to 35

• when asked to form matices which product will result in… as long as the format of the matrix aligns u can rearrange the matrices to get the ending format you wish. try to keep the big matrix as it is