HP 39g hp 39g+ (39g & 40g)_mastering the hp 39g+_English_E_F2224-90010.pdf - Page 271

The 'Matrix' group of functions This very extensive group of functions is provided to deal with matrices. The scope of functions and abilities covered in this group is in fact vastly greater than would be required by the average high school student or teacher. In many cases supplying an explanation in more detail than the manual of what the function is used for would occupy many pages to no real useful gain. Consequently many of the functions will be covered only by the comment "See User's manual". A detailed set of examples for the more commonly used functions is given in the chapter titled "Using Matrices on the hp 39g+". See page 170. COLNORM See User's manual COND See User's manual CROSS([vector],[vector]) This function finds the cross product of two vectors. Vectors for this function are written as single row matrices. 3 For example, a = (3, 4, 0) or 4 0 would be written as [3,4,0]. Note: If you want to use the Matrix Catalog to define your matrices for use with this function then you must use the key to define them as real vectors rather than as matrices as the CROSS function is one of the few for which this matters. 271