Question
Find DE if matrix D= Row 1= -2,4,6 and ROW 2= 5,-7,1 and matrix E= Row 1= 1,-2
Row 2= 0,-4, and Row 3= -3,4
WORK: [(-2)(1)+(4)(0)+(6)(-3)]=-20
[(-2)(-2)+(4)(4)+(6)(4)]=44
[(5)(1)+(-7)(0)+(1)(-3)]=2
[(5)(-2)+(-7)(4)+(1)(4)]=-34
The answers to choose from are:
A) Row 1= -20, 44 and Row 2= 8, -42
B) Row 1= -20, 8 and Row 2= 44, -42
I don't know where I am going wrong. Hopefully you can spot my error!!
Thanks.
Row 2= 0,-4, and Row 3= -3,4
WORK: [(-2)(1)+(4)(0)+(6)(-3)]=-20
[(-2)(-2)+(4)(4)+(6)(4)]=44
[(5)(1)+(-7)(0)+(1)(-3)]=2
[(5)(-2)+(-7)(4)+(1)(4)]=-34
The answers to choose from are:
A) Row 1= -20, 44 and Row 2= 8, -42
B) Row 1= -20, 8 and Row 2= 44, -42
I don't know where I am going wrong. Hopefully you can spot my error!!
Thanks.
Answers
Damon
I answered below. I agree with what you did to get
_-20___44
___2__-34
_-20___44
___2__-34