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cachematrix.R
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36 lines (31 loc) · 1.1 KB
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## Put comments here that give an overall description of what your
## functions do
##Assumption: All matrices are invertible
## The function makes a matrix of cached inverted values
makeCacheMatrix <- function(x = matrix()) {
invertedM <- NULL
set <- function(invert) {
x <<- invert
invertedM <<- NULL
}
get <- function() x
setinv <- function(inverse) invertedM <<- inverse
getinv <- function() invertedM
list(set=set,
get=get,
setinv=setinv,
getinv=getinv)
}
## The function uses the inbuilt function 'solve' of R and helps us getting the inverse from cached values
cacheSolve <- function(x, ...) {
## Return a matrix that is the inverse of 'x'
invertedM <- x$getinv()
if(!is.null(invertedM)) {
message("getting cached data") ##if the inverse exists already it gets the value from cached data here
return(invertedM)
}
data <- x$get()
inv <- solve(data) #else it uses the solve function to calculate the value
x$setinv(inv) # here it stores the inverted matrix value
invertedM
}