Write an m-file that determines the row and column indices for all non-zero elements in a matrix, x. row indices should be stored to the variable i, and column indices should be stored to the variable j. for the purpose of testing and grading your m-file: do not issue a clear command at the start of your m-file do not define the matrix x within your m-file. that vector should exist in the workspace prior to executing your m-file. do not display i and j. this will be done by the script the grader uses to test your m-file. variable names (x, i, and j) must be exactly as specified (lower case)

well cos like a ds it doesn't really die out, unlike for example, fifa, they always come out with a new version, so lets say your fifa 18 is charging you to update the teams and stuff, so, if messi were to go to real madrid (never gonna happen) it would switch messi to the other team, until the owners of fifa come out with fifa 19, then the game would eventually stop updating, and back to the ds, it doesn't really stop working after sometime because there's lots of things that it could be used for, and idk if u know what i'm saying, but long story short, samsung, represents the ds, if they still work, and people love them but not the new version, the old version still works, so they don't really force people to buy new phones, get me?