B=
(4 0 1 1
0 1 1 3 )
C=
(1 0
3 6
2 0
3 3)
I need to multiply BxC.
my lecture notes say that I must multiply the rows against the columns in C.I multiplied Row 1 of B against column 1 and 2 of C and Row 2 of B against Column 1 and 2 of B.
When I check the answer the solutions sheet says it is wrong.
I get BC=
(9 3
14 15 )
The solution says the correct answer is :
9 14
3 15
What have I done wrong?
What is the right way of multiplying matrices?
(4 0 1 1
0 1 1 3 )
C=
(1 0
3 6
2 0
3 3)
I need to multiply BxC.
my lecture notes say that I must multiply the rows against the columns in C.I multiplied Row 1 of B against column 1 and 2 of C and Row 2 of B against Column 1 and 2 of B.
When I check the answer the solutions sheet says it is wrong.
I get BC=
(9 3
14 15 )
The solution says the correct answer is :
9 14
3 15
What have I done wrong?
What is the right way of multiplying matrices?
-
You haven't done anything wrong; you multiplied the matrices correctly.
Believe it or not, the solution manual seems to be wrong on this one as you have the correct answer for BC.
Believe it or not, the solution manual seems to be wrong on this one as you have the correct answer for BC.