cos(w) 1 0 sin(w)
x 2 1 y =
x cos(w) 2 cos(w) + y cos(w) y sin(w)
Although most of our examples have used integers, don't forget that matrix elements can be real numbers or variables.
Here is a list of rules that this chapter has discussed. Each rule assumes that the matrices can be multiplied (their dimensions match correctly). Click on a rule to review the page that discusses it.
You have reached the end of this chapter. The next chapter will discuss further properties of matrix-matrix multiplication.