Zadanie 1. Oblicz wyznacznik macierzy
-1 2 |
1 -3 |
-1 |
2 |
3 |
1 |
2 |
-1 |
3 |
1 | |||
2 -1 |
2 2 |
b) |
1 |
2 |
1 |
0 -1 |
c) |
1 |
2 1 |
-4 1 |
2 -1 |
d) |
-1 0 |
-2 1 |
2 |
-3 |
1 |
-2 | |||||||
3 -1 |
2 -1 |
_2 |
1 |
2 |
2 |
5 |
3 |
-1 |
1 |
Zadanie 2. Znajdź macierz odwrotną
'1 |
-2 |
2' |
'1 |
0 |
-1" |
'2 |
-1 |
1 ' | |||
^ = |
2 |
0 |
-1 |
5 = |
0 |
2 |
1 |
C = |
0 |
2 |
3 |
_3 |
-1 |
1 ^ |
1 |
-1 |
0 |
1 |
0 |
-1_ |
Zadanie 3. Rozwiąż równanie macierzowe a) A- X ■ B = C
'2 -i r |
"2 -1' | |||
1 -2 2 |
B = |
’ 3 f |
C = |
1 2 |
-2 1 | ||||
-1 1 0 |
_3 0 |
b) A ■ X = B
'-} 2 |
0' |
'-1 |
f | |||
A = |
0 |
1 |
-1 |
B = |
0 |
2 |
1 |
0 |
2 _ |
-1 |
1 |
‘ 1 " |
'0' | ||
c) 3X |
2 -1 |
= [1 0 l]. |
-1 2 |
"1 |
-1 2 |
"6' |
-3 | |||
1 |
2 |
1 |
A' + 2 |
1 |
= |
1 |
_3 |
1 |
0_ |
_2_ |
_ 3 |
Zadanie 4. Rozwiąż układy równań
2x-y + z = -1 a) < x + 2y — 3z = — 1 3x + y + 2z = 0
b)
x + y -1 = 1
y+z = -2 x- z = 0
V’ -L -7 —
C)
3x - 5 y + 2z + 4r = 2 • lx-4y + z + 3t = 5 5x + 7 v -4z - 6t =3
s ^