HP 48gII Graphing Calculator Manuel d'utilisateur télécharger pdf (Page 319)

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decomposed in columns. To see the full result, use the line editor (triggered

by pressing ˜).

In RPN mode, you need to list the matrix in the stack, and the activate function

COL, i.e., @@@A@@@ COL. The figure below shows the RPN stack before and

after the application of function COL.

In this result, the first column occupies the highest stack level after

decomposition, and stack level 1 is occupied by the number of columns of the

original matrix. The matrix does not survive decomposition, i.e., it is no

longer available in the stack.

Function COL→

Function COL→ has the opposite effect of Function →COL, i.e., given n

vectors of the same length, and the number n, function COL builds a matrix

by placing the input vectors as columns of the resulting matrix. Here is an

example in ALG mode. The command used was:

COL([1,2,3],[4,5,6],[7,8,9],3)

In RPN mode, place the n vectors in stack levels n+1, n, n-1,…,2, and the

number n in stack level 1. With this set up, function COL places the vectors

1 2 ... 314 315 316 317 318 319 320 321 322 323 324 ... 863 864

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HP 48gII Graphing Calculator Manuel d'utilisateur Page 319

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