Version 01
programing assignment 02 has been done
Simple test is ok.
> source('~/.active-rstudio-document')
> x <- makeCacheMatrix(x = matrix(c(2,0,0,5),nrow=2,ncol=2))
> cacheSolve(x)
> source('~/.active-rstudio-document')
> x <- makeCacheMatrix(x = matrix(c(2,0,0,5),nrow=2,ncol=2))
> cacheSolve(x)
     [,1] [,2]
[1,]  0.5  0.0
[2,]  0.0  0.2
> cacheSolve(x)
Getting cached data
     [,1] [,2]
[1,]  0.5  0.0
[2,]  0.0  0.2

new file:   .Rproj.user/991B146A/persistent-state
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new file:   .Rproj.user/991B146A/sdb/prop/A26B259A
new file:   .Rproj.user/991B146A/sdb/prop/INDEX
new file:   .Rproj.user/991B146A/sdb/s-5BA5F03F/354CD85B
new file:   .Rproj.user/991B146A/sdb/s-5BA5F03F/68278A75
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new file:   .Rproj.user/991B146A/sdb/s-5BA5F03F/lock_file
new file:   Rprogramming.Rproj
new file:   lessons/lessonCodes/week02.R
new file:   programmingAssignments/ProgrammingAssignment2/README.md
new file:   programmingAssignments/ProgrammingAssignment2/cachematrix.R
new file:   programmingAssignments/ProgrammingAssignment2/prog02.docx
new file:   quiz/quiz01/hw1_data.csv
new file:   quiz/quiz01/quiz01.R
new file:   quiz/quiz01/quiz02.R
new file:   quiz/quiz01/rprog-data-quiz1_data.zip