Thread: Matrices

I need help with this problem:

Find 3A+B where A =
{3 5}
{-3 2}
and B=
{1 1}
{3 3}

Possible solutions are:
{10 16}
{12 9 }
---------
{10 15}
{-6 9 }
---------
{10 16}
{-6 9 }
---------
{10 16}
{-9 9 }

Originally Posted by gretchen

I need help with this problem:

Find 3A+B where A =
{3 5}
{-3 2}
and B=
{1 1}
{3 3}

Possible solutions are:
{10 16}
{12 9 }
---------
{10 15}
{-6 9 }
---------
{10 16}
{-6 9 }
---------
{10 16}
{-9 9 }

Code:

 
Find 3A+B where A = 
{ 3 5} 
{-3 2} 
and B=
{ 1 1}
{ 3 3}
 
3 [ 3 5 ] + [ 1 1 ] = [ 3.3+1 3.5+1 ] = [ 10 16 ]
  [-3 2 ]   [ 3 3 ]   [-3.3+3 3.2+3 ]   [-6   9 ]

RonL

Hello, gretchen!

Didn't they teach you anything about Matrix Arithmetic?

Find where and

Possible solutions are: .

. . . . . .

. . . . . . . . . third answer choice