Zadania
17. Znaleźć A ' metodą wyznacznikową i metodą operacji elementarnych:
1 0 |
-2 |
'l |
1 |
1 |
'2 1 |
2" | ||||||
a) |
A = |
2 1 |
-1 |
, b) A = |
2 |
1 |
-5 |
. c) |
4 -3 |
1 | ||
-1 -2 |
-1 |
3 |
-1 |
2 |
6 0 |
2 | ||||||
1 1 f |
“2 |
1 |
-f |
1 -1 |
2' | |||||||
d) |
A = |
2 -1 1 |
? |
e) A = |
5 |
2 |
4 |
•> |
0 |
/ł = |
-1 0 |
1 |
1 -1 1 |
7 |
3 |
4 |
2 -1 |
3 |
B)
A =
i) A = [7],
-sin a cos a
cos a sin a
1 0 |
1 f |
1 1 i r | |
0 -1 |
1 1 |
, k) zl = |
-1 1 -1 -1 |
-1 -1 |
0 1 |
1 -1 -1 -1 | |
-1 -1 |
0 •_ |
2-1-1 3 |
18. Znaleźć A 1 metodą podziału na bloki:
1 0 1 to _1 |
'1 1 f | ||
a) A = |
2 1 -1 |
, b) A = |
2 -1 1 |
-1 -2 -1 |
1 -1 1 |
L |
L |
-1 | ||||||||
1 |
0 |
1 |
f | |||||||
'3 |
1 |
0' | ||||||||
0 |
0 |
-1 |
1 |
1 | ||||||
2 |
-1 |
9 |
d) |
A = | ||||||
-1 |
-1 |
0 |
1 | |||||||
0 |
0 |
-3 | ||||||||
-1 |
-1 |
0 |
1 | |||||||
“l |
2 |
0 |
0' |
'2 |
-3 |
3 |
f | |||
3 0 |
4 0 |
0 |
0 |
0 |
A = |
0 |
1 |
1 |
-1 | |
-2 |
1 |
0 |
0 |
2 |
0 | |||||
0 |
0 |
0 |
-1 |
0 |
0 |
-1 |
- |
2 |
19. Rozwiązać równanie macierzowe (za pomocą macierzy odwrotnej):
1 -1 2 |
'3 -2 |
"2 1 |
2 \ | |||
1 2 1 3 1 0 |
= [2 -1 4], b) |
0 |
• X ■ |
5 2 |
4 5 |
a) X
3 |
1 |
2' |
f |
'4 |
1 2' |
7' |
0 |
3' |
> |
1 |
1 -1 | ||||
c) |
-1 |
0 |
3 |
• X ■ |
0 |
1 2 |
+ |
2 |
-1 |
1 |
= |
2 |
0 1 | ||
4 |
2 |
1 |
\ |
2 |
-2 2 |
1 |
0 |
0 |
> |
0 |
0 3 |
3 0' |
'5 -f | ||||
1 5' |
2 1 | ||||
d) |
1 2 |
- X ■ |
-2 3 |
= | |
0 1 |
_ 3 4 |
e)
1 2 -1 0
X =
1 1 I 1
g)
6 7
-5 -6
X
-1 +
6 7 -5 -6
0 X-
6 -5
7 -6
1 2 -I 0
8 9
-7 -8
8 9
-7 -8
2 V + /
8 -7
9 -8
/ |
3 -1" | |||||||||
Z- |
' 4 3' |
-37 + |
'-3 |
4_ |
3 |
1 2" 2 1 |
1 2 | |||
-1 -1 |
-2 |
3 |
-1 | |||||||
V |
> |
2 1 |
T |
' 3 -f |
7 |
0 -2' | ||||
{2I-3Xjr ■ |
'2 -f 3 0 |
r h _2 |
'2' 3^ |
2 0 -1 1 |
1 3 2 1 |
k)
2" |
“-T |
T |
r I m 1_ |
■ (2X + 3/Y = |
'2 1 4' |
'2 -1 2 |
-3 |
2 |
0 K |
0 -3 1 |
1 0 3 |