HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 364)

100

101

Page 11-38

Then, for this particular example, in RPN mode, use:

[2,-1,41] ` [[1,2,3],[2,0,3],[8,16,-1]] `/

The calculator shows an augmented matrix consisting of the coefficients matrix

A and the identity matrix I, while, at the same time, showing the next

procedure to calculate:

L2 = L2-2⋅L1 stands for “replace row 2 (L2) with the operation L2 – 2⋅L1. If we

had done this operation by hand, it would have corresponded to:

2\#1#1@RCIJ. Press @@@OK@@@, and follow the operations in

your calculator’s screen. You will see the following operations performed:

L3=L3-8⋅L1, L1 = 2⋅L1--1⋅L2, L1=25⋅L1--3⋅L3, L2 = 25⋅L2-3⋅L3,

and finally a message indicating “Reduction result” showing:

When you press @@@OK@@@ , the calculator returns the final result [1 2 –1].

Calculating the inverse matrix step-by-step

The calculation of an inverse matrix can be considered as calculating the

solution to the augmented system [A | I ]. For example, for the matrix A used

in the previous example, we would write this augmented matrix as

100

010

001

124

123

321

)(













−

−=

Iaug

1 2 ... 359 360 361 362 363 364 365 366 367 368 369 ... 863 864

Comentários a estes Manuais

Sem comentários

HP 48gII Graphing Calculator Manual do Utilizador Página 364

Comentários a estes Manuais

Manuais e produtos relacionados com não HP 48gII Graphing Calculator