cachematrix.R

## Put comments here that give an overall description of what your
## author mig2

## makeCacheMatrix: This function creates a special "matrix" 
## object that can cache its inverse.
makeCacheMatrix <- function(x = matrix()) {
  inverse <- NULL
  set <- function(y) {
    x <<- y
    inverse <<- NULL
  }
  get <- function() x
  setinverse <- function(inv) inverse <<- inv
  getinverse <- function() inverse
  list(set = set, get = get,
       setinverse = setinverse,
       getinverse = getinverse)
}


## cacheSolve: This function computes the inverse of the special "matrix" 
## returned by makeCacheMatrix above. If the inverse has already been 
## calculated (and the matrix has not changed), then the cachesolve should 
## retrieve the inverse from the cache.

cacheSolve <- function(x, ...) {
  inv <- x$getinverse()
  if(!is.null(inv)) {
    message("getting cached data")
    return(inv)
  }
  mat <- x$get()
  inv <- solve(mat, ...)
  x$setinverse(inv)
  inv
}