Multiplication+of+Matrices

To find out if two Matrices can be multiplied, then take a look at the dimensions. You put the dimension of the first matrix next to the dimension of the second matrix. If the inner numbers match, then you put the outer numbers together to get the dimensions of the matrix that you shoould get for the correct answer. If the inner numbers do not match up, then the two matrices cannot be multiplied. Ex. Matrix A Matrix B = AB 2x__3...............3__x2=AB, match AB=2x2

Ex. Matrix A Matrix B = AB 2x__3...............1__x3=AB, no match AB= cannot be worked because there won't be enough numbers.

It helps to do this before each multiplication problem that way you can figure out if the problem can be worked. Instead of writing down a lot of work, and the problem ends up not being able to complete because of not having enough numbers.

Multiplication of matrices You take the first row of the first matrix and multiply the first and second column of the second matrix. Next you will take the second row of the first matrix and multiply the first and second column of the second matrix. You multiply the first number of the first row to the first number of the second column. Then multiply the second number of the first row to the second number of the second column. Next you add your numbers together to get your final answer.