Most of what a devops person does is in fact development but it is of the non value adding variety. Basically a devops person spends the vast majority of their time configuring common off the shelf software, scripting this or that, etc.
A singular matrix is a matrix which has no inverse because its determinant is zero. If you recall, the inverse of a matrix is. 1/ ad-bc multiplied by: [ d -b ] [-c a ] If ad-bc = 0, then the inverse matrix would not exist because 1/0 is undefined, and hence it would be a singular matrix. E.g.
matrix. n, pl matrices (ËmeÉªtrÉªËsiËz; Ëmae-) ËmÃ¦ or. matrixes. 1 a, substance, situation or environment in which something has its, origin takes, form or is. enclosed. (2) anatomy anatomy the thick tissue at the base of a nail from which a fingernail or toenail. developsquare matrix-a matrix with the same number of rows and columns. real matrix-a matrix whose elements are all real numbers. transpose-a matrix formed by interchanging the rows and columns of a given matrix.