Question

Dadas as Matrizes : {2 3 8 } {1- 4 0,} B={ 4 5 -9}{6 2 7 } e C={2 0 } {8 6} {-4 -10} , Determine a) A+B b) 2A -B c) 3A- 1/2 . ct

Answer 1

A={2 3 8}
{1- 4 0}
B={4 5 -9}
{6 2 7 }
C={2 0 }
{8 6}
{-4 -10}
__________________a) A+B
{2 3 8 }+ {4 5-9} ={6 8- 1}
{1 -4 0} {6 2 7} { 7 2 7}
____________
2A -B
2. {2 3 8 } - {4 5 -9}
{ 1 -4 0} {6 2 7}

=(4 6 16)-(4 5 - 9)
(2 -8 0) ( 6 2 7)

= {0 1 25}
{-4 10 7}
__________________
3A- 1/2
3. {2 3 8} - 1/2
{1 -4 0}

=(6 9 24) - 1/2
(3 -12 0)

= (6/2 9/2 24/2)
( 3/2 12/2 0 )
Simplificando=(3 9/2 12
(3/2 6 0)