30 lilcmcnty algebry liniowej
11111
2 1 |
1 |
1 |
1 3 |
1 |
1 |
1 1 |
4 |
1 |
1 1 |
1 |
5 |
Odp. 24.
i. Dane są macierze
'1 -1 0" |
"2 -1 f |
'1 2 0" | |||
A = |
2 1 3 |
; b = |
3 2 1 |
; c = |
3 1 2 |
0 2 1 |
0 1 3 |
2 1 1 |
Wykonać działania
a) A + B;
Odp.
b) A-B;
Odp.
3
5
0
-2
3
3
1
4 ; 4
-1 0
-1 -1 0 1
-1
2 ; -2
c) At+2Bt;
Odp.
5 8 0 -3 5 4; 2 5 7
d) 2A + B + Ct;
Odp.
5 0 3 9 5 8 0 7 6
2. Obliczyć AB, gdy
a) A =
"1 3" |
, B = |
'1 2 |
2 -1 |
2 -1 |
h) A =
1 O
2 5 ’
c)
cl) A =
B = [l 3
1
3 ;
1
17 ’
B =
Odp.
" 4 3 6" | |||
, B = |
'1 2 3' |
; Odp. |
7 4 9 |
N> 1 O i___ |
-2 1 0 |
Odp.
13-12
2 6-24
3 9-36 0 0 0 0
6 Dane są macierze
1 |
2 | |||||||
1 |
1 |
2 |
o" | |||||
1 0 3 |
3 |
0 |
-1 |
1 | ||||
, B = |
, c = |
3 |
2 | |||||
-1 2 1 |
-1 |
2 |
-1 | |||||
0 |
2 |
3 | ||||||
1 |
4 |
Znaleźć
a) BA;
b) AT • BT + C ;
c) (A C)T - B;
Odp.
Odp.
Odp.
-1 |
4 |
5" | |
3 |
0 |
9 | |
-3 |
4 |
-1 | |
-3 |
8 |
1 _ | |
0 |
4 |
-1 |
-3 |
3 |
3 |
5 |
10 |
5 |
11 |
-2 |
10 |
0 |
-5" | ||
4 |
7 | ||
0 |
-3 | ||
_8 |
3_ |