solution to the assignment

Author: justindell

.gitignore

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+.Rproj.user
+.Rhistory
+.RData

ProgrammingAssignment2.Rproj

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+Version: 1.0
+
+RestoreWorkspace: Default
+SaveWorkspace: Default
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 2
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX

cachematrix.R

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-## Put comments here that give an overall description of what your
-## functions do
-
-## Write a short comment describing this function
-
+## makeCacheMatrix creates a list of functions used to
+## 1. set the value of the matrix
+## 2. get the value of the matrix
+## 3. set the value of the inverse matrix
+## 4. get the value of the inverse matrix
 makeCacheMatrix <- function(x = matrix()) {
-
+  i <- NULL
+  set <- function(y) {
+    x <<- y
+    i <<- NULL
+  }
+  get <- function() x
+  setinverse <- function(inv) i <<- inv
+  getinverse <- function() i
+  list(set = set, get = get, setinverse = setinverse, getinverse = getinverse)
 }
 
 
-## Write a short comment describing this function
-
+## cacheSolve calculates the inverse of x and caches the result
+## calling this function will return the cached result if called more than once
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+  i <- x$getinverse()
+  if (!is.null(i)) {
+    return(i)
+  }
+  data <- x$get()
+  i <- solve(data, ...)
+  x$setinverse(i)
+  i
 }