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Add files via upload #5851

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25 changes: 22 additions & 3 deletions cachematrix.R
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Original file line number Diff line number Diff line change
Expand Up @@ -3,13 +3,32 @@

## Write a short comment describing this function

makeCacheMatrix <- function(x = matrix()) {
makeCacheMatrix <- function(x = matrix()) { ## arg. definition with default mode of "matrix"
nu <- NULL ## set nu to NULL to hold value of matrix inverse
set <- function(y) { ## set function
x <<- y ## value of matrix in parent environment
nu <<- NULL ## if there is a new matrix, reset nu to NULL
}
get <- function() x ## get function returns value of the matrix argumen

setinverse <- function(inverse) nu <<- inverse ## assigns value of nu in parent environment
getinverse <- function() nu ## gets the value of nu where called
list(set = set, get = get, setinverse = setinverse, getinverse = getinverse) }

}


## Write a short comment describing this function

cacheSolve <- function(x, ...) {
## Return a matrix that is the inverse of 'x'
## Return a matrix that is the inverse of 'x'
nu <- x$getinverse()
if(!is.null(nu)) {
message("getting cached data")
return(nu)
}
data <- x$get()
nu <- solve(data, ...)
x$setinverse(nu)
nu
}