Question

i need help with matrices. plz help me

Answer 1

4 -1 -1 5
0 13 + -9 1 = ?
6 -3 7 -8

Answer 2

hey just add corresponding values in matrix,

Answer 3

how?

Answer 4

oh nvm i got it

Answer 5

great

Answer 6

wait how do i multiply matrices? i have an example let me just post it

Answer 7

2 0 3 -2 = ?
-1 5 * 0 4

Answer 8

see first thing when you want multiply 2 matrices, rows of 1st matrix should be same as coulmns of 2nd

Answer 9

in this case they are indeed same, so take 1st row of 1sr matrix multiply with the 1 column of the 2nd matrix

Answer 10

ex: 2*3 +0*0 =6

Answer 11

you have to multiply corresponding values ...

Answer 12

am i getting through??

Answer 13

uh ya can u just do that example with the whole part of matrices

Answer 14

now take, 1st row and 2nd column ,2*-2+0*4 = -4,
then 2nd row and 1st column, -1*3 +5*0 = -3
2nd row and 2nd column, -1*-2 +5*4 =22

Answer 15

now product matrix will be 6 -4
-3 22

Answer 16

did you get it?

Answer 17

no i dint, can you explain further?

Answer 18

@theloser please explain....

Answer 19

\[[a~b]*[c]=ac+bd\\ ~~~~~~~~~~ [d] \]
if you have more than one column
\[[a~b]*[c~n]=[ac+bd~~an+bm]\\ ~~~~~~~~~~ [d~m] \]this is the basic processs