Arithmetic operations can also be applied to matrices, with their usual mathematical behavior. Additions and subtractions are performed on each element. This is handy to solve a set of linear equations. Another way to solve this problem is to use the inv function, which return the inverse of its argument. It is sometimes useful to multiply or divide matrices element-wise.
Some functions change the order of elements.
Use dot-tick if you just want to reverse the rows and columns. However, a class of functions has a paramount importance in numerical computing, the polynomials. Some control characters have a special representation. Strings are actually matrices of characters. You can store the result of an expression into what is called a variable.