Question

Dadas as matrizes A ,B determine a matriz C tal que C= A+ B +I 3

Answer 1

.........|1.._0_7|1_0
...A= |2_-1_3|2_-1
.........|0._0_1|0_0

A= (0x1x7) + (0x3x1) + (1x2x0) - (1x-1x1) - (0x3x0) - (7x2x0)

A = 0 + 0 + 0 + 1 - 0 - 0
A = 0 + 1 - 0 - 0
A = 1 - 0 - 0
A = 1 - 0
A = 1
--------------->

...........|4_-3_2|4_-3
....B = |1._-5_7|1._-5
...........|0_.0_5|0_0

B = (4x-5x5) + (-3x7x0) + (2x1x0) -
(0x-5x2) - (0x7x4) - (5x1x-3)

B = -100 + 0 + 0 - 0 - (-15)
B = -100 + 0 - 0 + 15
B = -100 - 0 + 15
B = -100 + 15
B = - 85

C = A + B + 13
C = 1 - 85 + 13
C = - 84 + 13
C = - 71