Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Let
a
=
(
2
,
−
1
,
3
)
\mathbf{a}=(2,-1,3)
a
=
(
2
,
−
1
,
3
)
and
b
=
(
4
,
0
,
−
5
)
\mathbf{b}=(4,0,-5)
b
=
(
4
,
0
,
−
5
)
. Which of the following equals
b
+
a
\mathbf{b}+\mathbf{a}
b
+
a
? a)
(
2
,
1
,
−
8
)
(2,1,-8)
(
2
,
1
,
−
8
)
b)
(
6
,
1
,
−
2
)
(6,1,-2)
(
6
,
1
,
−
2
)
c)
(
6
,
−
1
,
−
2
)
(6,-1,-2)
(
6
,
−
1
,
−
2
)
d)
(
6
,
−
1
,
3
)
(6,-1,3)
(
6
,
−
1
,
3
)
Browse the problem library