Let 
= 
+
+
and 
be a vector such that 
+
=0 and 
.
=4, then 
is equal to
a.
b.
8
c.
d.
9
= + + and be a vector such that + =0 and . =4, then is equal toa.
b.
8
c.
d.
9
Question ID - 56536 | SaraNextGen Top Answer Let = + + and be a vector such that + =0 and . =4, then is equal to
a.
b.
8
c.
d.
9
Let = + + and be a vector such that + =0 and . =4, then is equal to
|
a. |
|
b. |
8 |
|
c. |
|
d. |
9 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
=
= 
= 
(
.
)
− (
.
)
=
2
−4 =
Now 
=
So, 2
=
= 3
−5
+2
=
+
=
=
=
127 votes
Answer Link
127