Page 11-27
previous section. The procedure for the case of “dividing”
b
by
A
is
illustrated below for the case
2x
1
+ 3x
2
–5x
3
= 13,
x
1
– 3x
2
+ 8x
3
= -13,
2x
1
– 2x
2
+ 4x
3
= -6,
The procedure is shown in the following screen shots:
The same solution as found above with the inverse matrix.
Solving multiple set of equations with the same coefficient matrix
Suppose that you want to solve the following three sets of equations:
X +2Y+3Z = 14, 2X +4Y+6Z = 9, 2X +4Y+6Z = -2,
3X -2Y+ Z = 2, 3X -2Y+ Z = -5, 3X -2Y+ Z = 2,
4X +2Y -Z = 5, 4X +2Y -Z = 19, 4X +2Y -Z = 12.
We can write the three systems of equations as a single matrix equation:
A
⋅
X
=
B
, where
,
,
1
2
4
1
2
3
3
2
1
)
3
(
)
2
(
)
1
(
)
3
(
)
2
(
)
1
(
)
3
(
)
2
(
)
1
(
=
−
−
=
Z
Z
Z
Y
Y
Y
X
X
X
X
A
.
12
19
5
2
5
2
2
9
14
−
−
=
B
Содержание 49g+
Страница 1: ...hp 49g graphing calculator user s guide H Edition 4 HP part number F2228 90006 ...
Страница 197: ...Page 5 30 LIN LNCOLLECT POWEREXPAND SIMPLIFY ...
Страница 377: ...Page 11 55 Function KER Function MKISOM ...
Страница 457: ...Page 13 26 In the right hand side figure above we are using the line editor to see the series expansion in detail ...
Страница 775: ...Page 26 10 the location of the backup battery in the top compartment at the back of the calculator ...
Страница 838: ...Page L 5 ...