Determinantes 3 * 3
1.)
7 15 -5
-2 6 -3
-1 4 -8 =(-336+40+45)-(240-84+30) = (-254)-(186) = -437
7 15 -5
-2 6 -3
2.)
3 11 -9
-2 4 9
-6 8 -8 =(-96+144+(-594))-(176+216+216) = (-546)- (608) = -1154
3 11 -9
-2 4 9
3.)
1 6 -5
-2 7 2
0 9 0 =(0+90+0)-(0+18+0) = (90) -(18) = 72
1 6 -5
-2 7 2
jueves, 13 de febrero de 2020
Suma y Resta de Matrices
SUMA DE MATRICES
1.)
J= 5 4 3 2 G= 2
7 5 9 JG=
5+2 4+7 3+5
2+9
-2
1 0 -2
0
11 8 9 -2 1+11
0+8 -2+9
 |
|||
 |
= 7
11 8 11
-2
12 8 7
R//
2.)
M= 3
6 -9 -5
3 1 3+(-5) 6+3 -9+1
7
15 2
R= 2
4 -9 MR=
7+2
15+4 2+(-9)
3
-2 -1 -6 6
8 3+(-6) -2+6 -1+8
 |
|||
 |
|||
= -2
9 -8
9 19
-7
-3 4 7 R//
RESTA DE MATRICES
1.)
-14 2 1 3 7
-2 -14-3 2-7
11-(-2)
M=
6 -8 0 J=
-9 5
1 MJ= 6-(-9) -8-5
0-1
3 -11
9 0
-6 0 3-0 -11-(-6)
9-0
-17 -5 9
=
15
-13 -1
3 -5
9 R//
2.)
25
-2 6 3 7
0 25-3 -2-7
6-0
G= -24 1 0 J=
-1 9 6 GJ=
-24-(-1) 1-9 0-6
15
-6 12 0 -2
8 15-0
-6-(-2) 12-8
 |
22
-9 6
= -23 -8
-6
15 -4
4 R//
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