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cachematrix.R
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48 lines (41 loc) · 1.37 KB
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## Put comments here that give an overall description of what your
## functions do
# This function creates a special "matrix" object
# that can cache its inverse.
makeCacheMatrix <- function(x = matrix()) {
# The matrix is x; inverse is stored by makeCacheMatrix
invMatrix <- NULL
set <- function(matrix) {
x <<- matrix
invMatrix <<- NULL
}
get <- function() m
getInverse <- function() invMatrix
setInverse <- function(inverseMatrix) invMatrix <<- inverseMatrix
list(set = set,
get = get,
getInverse = getInverse,
setInverse = setInverse
)
}
# This function computes the inverse of the special
# "matrix" returned by `makeCacheMatrix`. If the inverse has
# already been calculated (and the matrix has not changed), then
# `cacheSolve` should retrieve the inverse from the cache.
cacheSolve <- function(x, ...) {
invMatrix <- x$getInverse()
if(!is.null(invMatrix)) {
# Return the cached Matrix
message("Returning inverse matrix from cache")
return(invMatrix)
}
# If we haven't already returned, we need to compute the inverse
# Get the existing matrix
data <- x$get()
# Calculate the inverse
invMatrix <- solve(data)
# Invoke the function to cache the matrix
x$setInverse(invMatrix)
# Return the inverse
invMatrix
}