Q. 19
Mark (√) against the correct answer in the following:
If 
and 
then 
A. 
B. 
C. 
D. 
Answer :
Given vectors 
and 
Asking us to find, |
x 2
|
2
=
x 2
=
= 
[0-(-4 
-3)] - 
[(1 
6)-(2 
-3)] + 
[(1 
-4)-0]
=
(-12)-
(6+6)+
(-4)
=-12
12
-4
|
x 2
|=
= 
=4.
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