Programming Assignment 2

The solution for the ProgrammingAssignment2 by A.Neverov

Description

This set of fulction allows to invert a square matrix and excludes the repeated calculations via the caching of the inverted matrix

To use this function:

• create the square matrix, for example m
• create the CacheMatrix-object cm <- makeCacheMatrix(m)
• calculate the inverted matrix im <- cacheSolve(cm)

To proof the function's

• call the function round(m %*% im)
• as the result you'll get an E-matrix

WARNING! It's impossible to invert non-square matrixes or matrixes containing NAs with these functions

makeCacheMatrix -

This function creates a special object that contains the matrix and its invert

Argument:

• x - the base square matrix Returns:
• the list contains method to access the matrix and its invert
• If x is non-square matrix or contains any NAs the function returns NULL

cacheSolve

The fucntion for inverting the square matrix created via the objects created with the makeCacheMatrix function

Arguments

• x - the makeCacheMatrix object
• ... - the set of arguments for solve() function

Returns

• if x isn't null the inverted matrix is returning
• if x is null the function returns NULL