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cachematrix
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cachematrix
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## Functions that cache the inverse of a matrix
## Creates a special matrix object that can cache its inverse
makeCacheMatrix <- function( m = matrix() ) {
## initialize the inverse
i <- NULL
## set the matrix
set <- function( matrix ) {
m <<- matrix
i <<- NULL
}
## get the matrix
get <- function() {
## Return the matrix
m
}
## set the inverse of the matrix
setInverse <- function(inverse) {
i <<- inverse
}
## get the inverse of the matrix
getInverse <- function() {
## return the inverse
i
}
## return a list of the methods
list(set = set, get = get,
setInverse = setInverse,
getInverse = getInverse)
}
## Compute the inverse of the special matrix "makeCacheMatrix".
## the "cachesolve" should retrieve the inverse from the cache,
## if the inverse has already been calculated.
cacheSolve <- function(x, ...) {
## return a matrix that is the inverse of 'x'
m <- x$getInverse()
## return the inverse if its already set
if( !is.null(m) ) {
message("getting cached data")
return(m)
}
## get the matrix from our object
data <- x$get()
## calc the inverse using matrix multiplication
m <- solve(data) %*% data
## set the inverse to the object
x$setInverse(m)
## return the matrix
m
}