Scalar Multiplication in R

matrix, r

Solution

In `R` the default is scalar. For matrix multiplication use `%*%`. `t` is transpose and `solve` will give you the inverse. Here are some examples:

a = matrix(1:4,2,2)
3 * a
c(1:2) %*% a
c(1:2) %*% t(a)
solve(a)

Here is a link: matrix algebra in R

Problem

I'm trying to perform simple scalar multiplication in R, but I'm running into a bit of an issue. In linear algebra I would do the following: Here's how I've implemented this in R: ``` A <- matrix(1:4, 2, byrow = TRUE) c <- matrix(rep(3, 4), 2) A * c ``` This produces the correct output, but creating the scalar matrix c will be cumbersome when it comes to larger matrices. Is there a better way to do this?

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