LAB100

Week 22: Operations with Matrices

Your aim for this workshop is to learn how to do matrix computations using R. Upon completing this workshop you should be able to:

• Perform element-wise calculations

• Perform matrix multiplication

In this workshop you will be using the following matrices.

A <- matrix( c(1,-3,2,-5,1,2,2,3,-4), ncol=3, nrow=3, byrow=FALSE )

B <- matrix( c(10,6,8,16,8,12,17,9,14), ncol=3, nrow=3, byrow=FALSE )

C <- matrix( c(1,-4,5,2,-3,-6), ncol=3, nrow=2, byrow=FALSE )

D <- matrix( c(8,7,8,14,1,-4), ncol=2, nrow=3, byrow=FALSE )

E <- matrix( c(2,2,2,2), ncol=2, nrow=2, byrow=FALSE )

Remember that you need to change the working directory and open a new R script at the start of each workshop.