1: n- .
: : 1) , 2) , 3) , 4) .
, , .
: - .
☺ 27. . ∙ = . (. ). ( !).
: :
1) : 1- : 2-1; 3-1; 2- : 1R-2Rx2; 3- : 3- ; 4- : 2- :
1 | 2 | 3 | 1 | 1 | 1 | 2 | 2 | 7 | 3 | 0 | 3 | 7 | 3 | 4 |
3 | 4 | 2 | = | 3 | 1 | 1 | = | 3 | 1 | -1 | =(-1)∙(-1)2+3 | 4 | 1 | = -5 |
4 | 5 | 4 | 4 | 1 | 0 | 4 | 1 | 0 |
2) : 1- : 3R-2R; 2- : 3-2; 3- : 3- ; 4- : 2- :
2 | -3 | 1 | 1 | 2 | -3 | 1 | 2 | 2 | -3 | 4 | 3 | 2 | 4 | 4 |
1 | -4 | 3 | = | 1 | -4 | 3 | = | 1 | -4 | 7 | =(-1)∙(-1)3+2 | 1 | 7 | = 10 |
1 | -5 | 2 | 0 | -1 | -1 | 0 | -1 | 0 |
3) .1,2), :
4) , :
.
5) 1: 1- : 3R-2R; 2R-1Rx4; 2- : 1R+3R; 3- : 1- ; 4- : 2- :
-1 | 2 | -3 | 1 | -1 | 2 | -3 | 2 | 0 | 5 | -3 | 3 | 5 | -3 | 4 |
-4 | -7 | -13 | = | 0 | -15 | -1 | = | 0 | -15 | -1 | =(1)∙(-1)3+1 | -15 | -1 | = -50 |
-3 | 5 | -13 | 1 | 3 | 0 | 3 | 0 |
6) , :
.
7) 2: 1- : 2+32; 3-12; 2- : 2R-3R; 3R-1R2; 3- : 3R-2R2; 3R-1R2; 4- : 2- ; 5- : 2- :
7 | -26 | 13 | 1 | 7 | 0 | -1 | 2 | 7 | 0 | -1 | 3 | 7 | 0 | -1 | 4 | -1 | 5 | |
12 | -35 | 19 | = | 12 | 3 | -5 | = | -5 | 1 | 2 | = | -5 | 2 | =(1)∙(-1)3+1 | -9 | = -50 | ||
17 | -52 | 27 | 17 | 2 | -7 | 3 | 2 | -5 | -9 |
8) , :
|
|
.
9) 3: 1- : 1R-2R; 2R-1Rx4; 2- : 1- ; 3- : 2- :
-3 | 1 | -6 | 1 | 0 | 0 | 2 | -3 | 1 | 3 | |
-3 | 1 | -8 | = | -3 | 1 | -8 | =(2)∙(-1)1+3 | 4 | 7 | = -50 |
4 | 7 | 1 | 4 | 7 | 1 |
10) , :
.
11) 4: 1- : 2+32; 2- : 3-12; 3- : 1-29; 4- : 2- ; 5- : 2- :
9 | -35 | 18 | 1 | 9 | 1 | 18 | 2 | 9 | 1 | 0 | 3 | 0 | 0 | 4 | -2 | 5 | ||
13 | -47 | 24 | = | 13 | 1 | 24 | = | 13 | 1 | -2 | = | 4 | 1 | -2 | =(1)∙(-1)1+2 | -7 | = -50 | |
12 | -37 | 17 | 12 | -3 | 17 | 12 | -3 | -7 | -3 | -7 |
12) :
▬►
: ( !).
28. . ∙ = ∙ = D. D.
: :
1) , :
,
d11 = 2∙1 +(-3)∙3 +1∙4 = -3, d12 = 2∙2 +(-3)∙4 +1∙5 = -3,
d13 = 2∙3 +(-3)∙2 +1∙4 = 4,
d21 = 1∙1 +(-4)∙3 +3∙4 = 1, d22 = 1∙2 +(-4)∙4 +3∙5 = 1,
d23 = 1∙3 +(-4)∙2 +3∙4 = 7,
d31 = 1∙1 +(-5)∙3 +2∙4 = -6, d32 = 1∙2 +(-5)∙4 +2∙5 = -8,
d33 = 1∙3 +(-5)∙2 +2∙4 = 1,
2) D: 1- : 1R+2R3; 2- : 2 - : 1- ; 3- : 2- :
-3 | -3 | 4 | 1 | 0 | 0 | 2 | 1 | 1 | 3 | |
1 | 1 | 7 | = | 1 | 1 | 7 | =(25)∙(-1)1+3 | -6 | -8 | = -50 |
-6 | -8 | 1 | -6 | -8 | 1 |
: !.
☻ :
29. . ∙ = . (. ). ( !).
30. . ∙ = ∙ = D. D.
:
1. = ∙ , ?
2. ∙ = ∙ = D. : ?
3. ∙ = ∙ = D. , D ?
|
|