For the given graphical representation of vector v, estimate a1 and a2 so that 
and calculate 
.
A. a1 = 6 a2 = 8; 
= 10
B. a1 = -6, a2 = 8; 
= 3.7
C. a1 = -6, a2 = 8; 
= 100
D. a1 = -6, a2 = 8; 
= 10
Answer: D
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