Question

Dadas as matrizes.
A=║0 3║    B= ║-2 4║   e C=║  4 2║
     ║2 -5║       ║0 -1║            ║ -6 0║

Calcule?
a) A+B=?
b) A+C= ?
c) B+C+A=?

Answer 1

Olá!!

Resolução!!

a)

A + B = ?


A = [ 0 ` 3 ] + [ -2 ` 4 ]
```````[ 2 -5 ] ```` [ 0 ` - 1 ]

[ 0 + ( - 2 ) 3 + 4 ] = [ - 2 `` 7 ]
[ 2 + 0 `` ````- 5 - 1 ] = [ 2 `` - 6 ]

R = [ - 2 `` 7 ]
......[ 2 `` - 6 ]

b)

A + C = ?

[ 0 ` 3 ] + [ 4 ` 2 }
[ 2 - 5 ] `` [ -6 0 ]

[ 0 + 4 ```````````` 3 + 2 ] = [ 4 `` 5 ]
[ 2 + ( - 6 ) `` - 5 + 0 ] = [ -4 ` -5]

R = [ 4 `` 5 }
```````[ -4 `-5 ]

A + B + C = ?

[ 0 ` 3 ] + [ -2 ` 4 ] + [ 4 `` 2 ]
[ 2 -5 ] ```` [ 0 ` - 1 ] ``[ -6 ``0 ]

[ 0 + ( - 2 ) + 4 ```````` 3 + 4 + 2 ]
[ 2 + 0 + ( - 6 ) `` -5 + ( -1 ) + 0 ]

[ - 2 + 4 `` 7 + 2 ]
[ 2 - 6 ```` - 5 - 1 ]

[ 2 `` 8 ]
[ -4 `-6 ]

R = [ 2 `` 8 ]
```````[ -4 `-6 ]

Espero ter ajudado!!