This is a tutorial introducing two important matrix manipulation spreadsheet functions in Excel: the matrix transposition function TRANSPOSE() and the matrix multiplication function MMULT(). These functions are a bit harder to use than the regular spreadsheet functions in the sense that the result is a matrix and a matrix cell range is treated by the program as a unity (you cannot change the formula since you cannot operate on a single cell). There are some basic rules to follow while entering or modifying such arrays. A benchmarking post will follow in which the two matrix functions will be compared speed wise with regular spreadsheet functions and also with user defined custom VBA functions.
